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Слова на букву metr-noe (2629)

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N-acylsphingosine
A condensation product of an organic acid with sphingosine at the amino group of the latter compound.
N-allylnormorphine
SYN: nalorphine.
n-capric acid
A fatty acid found among the hydrolysis products of fat in goat's milk, cow's milk, and other substances. Cf.:n.caproic acid, caprylic acid. SYN: n-decanoic acid.
n-caproic acid
A fatty acid found among the hydrolysis products of fat in butter, coconut oil, and some other substances. SYN: n-hexanoic acid.
N-carbamoylaspartic acid
SYN: ureidosuccinic acid.
N-carbamoylglutamic acid
An intermediate in the carbamoylation of ornithine to citrulline in the urea cycle; used in the treatment of individuals having a deficiency of the enzyme that synthesizes ...
N-carboxyanhydrides
Heterocyclic derivatives of amino acid s from which polypeptides may be synthesized.
N-carboxyurea
SYN: allophanic acid.
n-decane
A paraffin hydrocarbon, CH3—(CH2)8—CH3.
n-decanoic acid
SYN: n-capric acid.
n-docosanoic acid
SYN: behenic acid.
n-dodecanoic acid
SYN: lauric acid.
n-eicosanoic acid
SYN: arachidic acid.
N-formiminotetrahydrofolate
A derivative of one-carbon tetrahydrofolate formed via l-histidine catabolism.
N-formylglycinamide ribotide
An intermediate in purine biosynthesis.
N-formylkynurenine
The product of the oxidative cleavage of the indole ring in l-tryptophan; the intermediate first formed in l-tryptophan catabolism.
N-formylmethionine
Methionine acylated on the NH2 group by a formyl (–CHO) group. This is the starting amino acid residue for virtually all bacterial polypeptides. It is also observed in ...
N-glycoside
Misnomer for glycosyl.
n-heptylpenicillin
Penicillin K.
n-Hexane
A chemical made from crude oil that is mixed with solvents for a number of uses. Inhaling n-hexane causes nerve damage and paralysis of the arms and legs. Some people abuse ...
n-hexanoic acid
SYN: n-caproic acid.
n-icosanoic acid
SYN: arachidic acid.
N-methylcarnosine
SYN: anserine (2).
N-methylglucamine
SYN: methylglucamine.
N-methylhistidine
A methylated derivative of histidine found in actin; in the breakdown of actin and myosin, N-methylhistidine is released into the urine; urinary output of N-methylhistidine is a ...
n-nonanoic acid
SYN: pelargonic acid.
N-succinyladenylic acid
SYN: adenylosuccinic acid.
N-sulfanilylacetamide
SYN: sulfacetamide.
N-sulfanilylbenzamide
SYN: sulfabenzamide.
n-tetracosanoic acid
SYN: lignoceric acid.
N.A.
Abbreviation for numerical aperture.
N.A.D.
Abbreviation for no appreciable disease; nothing abnormal detected (British).
N.H.S.
Abbreviation for National Health Service (England).
N.K.
Abbreviation for Nomenklatur Kommission.
N/2
Symbol for seminormal.
n0
Abbreviation for Loschmidt number.
N1-acetylsulfanilamide
An antibacterial sulfa drug used topically and in the eye.
N10-formyltetrahydrofolate
A formyl derivative of tetrahydrofolate that serves as a one-carbon source in metabolism.
N4-acetylsulfanilamide
An intermediate in the synthesis of sulfanilamide; formed in animal bodies by acetylation of sulfanilamide. SYN: p-sulfamylacetanilide.
N5,N10-methenyltetrahydrofolate
A one-carbon derivative of tetrahydrofolate; used in purine biosynthesis.
N5,N10-methenyltetrahydrofolic acid
SYN: anhydroleucovorin.
N5,N10-methylenetetrahydrofolate reductase
An enzyme that converts N5,N10-methylenetetrahydrofolate to N5,N10-methenyltetrahydrofolate using NADP+; a deficiency of this enzyme results in an accumulation of l-homocysteine ...
N5-methyltetrahydrofolate
An active one-carbon derivative of tetrahydrofolate that participates in the S-methylation of l-homocysteine. - N5-methyltetrahydrofolate:homocysteine methyltransferase ...
NA
Symbol for Avogadro number. Abbreviation for Nomina Anatomica.
Na
Symbol for sodium (natrium).
Na (sodium)
Na is the chemical symbol for sodium. From natrium, a synonym for sodium. Sodium is the major positive ion (cation) in fluid outside of cells. The chemical notation for sodium is ...
nabilone
A synthetic cannabinoid used in the treatment of nausea and vomiting associated with cancer chemotherapy.
Naboth
Martin, German anatomist and physician, 1675–1721. See nabothian cyst, follicle.
nacreous
Lustrous, like mother-of-pearl; descriptive term for bacterial colonies. [Fr. nacre, mother-of-pearl]
NAD
Abbreviation for nicotinamide adenine dinucleotide.
NAD(P)+ nucleosidase
An enzyme hydrolyzing NAD(P)+ to release free nicotinamide and adenosinediphosphoribose(phosphate).
NAD+
Abbreviation for nicotinamide adenine dinucleotide (oxidized form). - NAD+ nucleosidase an enzyme hydrolyzing NAD+ to nicotinamide and adenosine diphosphoribose. SYN: ...
NADase
SYN: NAD+ nucleosidase.
NADH
Abbreviation for nicotinamide adenine dinucleotide (reduced form). - N. dehydrogenase an iron-sulfur–containing flavoprotein reversibly oxidizing N. to NAD+; an inherited ...
Nadi reaction
See under reaction.
nadide
A nicotinamide adenine dinucleotide compound used as an antagonist to alcohol and narcotics.
nadir
The lowest value of blood count s after chemotherapy. [M.E., Med. L., lowest point, fr. Arabic nazir, opposite (the zenith)]
nadolol
A β-adrenergic blocking agent with actions similar to those of propranolol.
NADP
Abbreviation for nicotinamide adenine dinucleotide phosphate.
NADP+
Abbreviation for nicotinamide adenine dinucleotide phosphate (oxidized form).
NADPH
Abbreviation for nicotinamide adenine dinucleotide phosphate (reduced form). - N.- cytochrome c2 reductase an enzyme catalyzing the reduction of 2ferricytochrome c2 to ...
Naegeli
Otto, Swiss physician, 1871–1938. See N. type of monocytic leukemia. Oskar, Swiss physician, 1885–1959. See N. syndrome.
Naegleria
A genus of free-living soil, water, and sewage ameba (order Schizopyrenida, family Vahlkampfiidae) one species of which, N. fowleri, has been implicated as the causative agent of ...
nafcillin
A semisynthetic penicillin derived from 6-aminopenicillanic acid; resistant to penicillinase, and effective against Staphylococcus aureus. - n. sodium a ...
Naffziger
Howard C., U.S. surgeon, 1884–1961. See N. operation, N. syndrome.
naftifine hydrochloride
A broad-spectrum antifungal agent used in the topical treatment of tinea infections.
NAG
Abbreviation for N-acetylglutamate.
nagana
An acute or chronic disease of cattle, dogs, pigs, horses, sheep, and goats in sub-Saharan Africa; marked by fever, anemia, and cachexia, varying in severity with the parasite and ...
Nagel
Willibald A., German ophthalmologist and physiologist, 1870–1911. See N. test.
Nägele
Franz K., German obstetrician, 1777–1851. See N. obliquity, N. pelvis, N. rule.
Nägeli
Karl W. von, Swiss botanist, 1817–1891. See micelle.
Nageotte
Jean, French histologist, 1866–1948. See N. cells, under cell.
Nail
In medicine, there are two types of nails. One is just a plain old metal nail used to hold 2 or more pieces of bone together, for example, after a fracture. The other type of nail ...
Nail care
Many nail problems are due to poor nail care. Good nail habits help keep nails healthy. The following recommendations are designed for good nail care: Keep nails clean and dry to ...
Nail dysgenesis and hypodontia
A genetic disorder characterized by abnormalities of the nails (nail dysgenesis) and the absence of several teeth (hypodontia) at birth. The disorder is also known as Witkop ...
Nail infection, fungal
The most common fungus infection of the nails is onychomycosis. Onychomycosis makes the nails look white and opaque, thickened, and brittle. Those at increased risk for ...
Nail-patella syndrome
An hereditary condition characterized by abnormally formed or absent nails and underdeveloped or absent kneecaps (patellae). Other features include: {{}}Iliac horns Abnormality of ...
nailing
Act of inserting or driving a nail into the ends of a fractured bone.
Nails, jogger's
Very small semi-circular white spots on the nails. These spots may be found on the fingernails and, particularly, the toenails. The white spots on the nails reflect injury to ...
Nails, ringworm of the
The most common fungus infection of the nails, also called onychomycosis. Onychomycosis makes the nails look white and opaque, thickened, and brittle. Those at increased risk ...
Nails, white spots on the
Very small semi-circular white spots on the nails. These spots may be found on the fingernails and, particularly, the toenails. The white spots on the nails reflect injury to ...
Najjar
Victor A., U.S. physician and biochemist, *1914. See Crigler-N. syndrome.
Nakanishi
Kazuhiro, Japanese physician, *1945. See N. stain.
nalbuphine hydrochloride
A synthetic opioid analgesic chemically related to oxymorphone, a narcotic, and to naloxone, a narcotic antagonist, with both agonist and antagonist narcotic properties.
nalidixic acid
An orally effective antibacterial agent used in the treatment of genitourinary tract infections.
nalorphine
An early antagonist of most of the depressant and stimulatory effects of morphine and related narcotic analgesics; precipitates severe withdrawal symptoms in morphine addicts, ...
naloxone hydrochloride
A potent antagonist of endorphins and narcotics, including pentazocine; devoid of pharmacologic action when administered without narcotics.
naltrexone
An orally active narcotic antagonist; devoid of pharmacologic action when administered in the absence of narcotics.
NAME
Acronym for nevi, atrial myxoma, myxoid neurofibromas, and ephilides. See N. syndrome.
Named reporting
In public health, named reporting is the reporting of infected persons by name to public health departments. This is standard practice for the surveillance of many infectious ...
NANDA
Acronym for North American Nursing Diagnosis Association.
nandrolone
A semisynthetic, parenterally administered, anabolic, androgenic steroid. - n. decanoate an anabolic androgen. - n. phenpropionate a moderately long-acting synthetic ...
Nanism
Once known as dwarfism, this condition is now correctly called short stature. * * * Obsolete term for dwarfism. [G. nanos; L. nanus, dwarf] - mulibrey n. (mu′li-bra) ...
Nannizzia
A genus of ascomycetous fungi composed of Microsporum species in their perfect state.
nano-
1. Combining form relating to dwarfism (nanism). 2. (n) Prefix used in the SI and metric systems to signify submultiples of one-billionth (10−9). [G. nanos, dwarf]
nanocephalia
SYN: microcephaly.
nanocephalous, nanocephalic
SYN: microcephalic.
nanocephaly
SYN: microcephaly. [ nano- + G. kephale, head]
nanocormia
SYN: microsomia. [ nano- + G. kormos, trunk]
nanogram
One-billionth of a gram (10−9 g).
nanokatal
One-billionth of a katal (10−9 kat).
nanomelia
SYN: micromelia. [ nano- + G. melos, limb]
nanometer
One-billionth of a meter (10−9 m).
nanophthalmia, nanophthalmos
SYN: microphthalmos. [ nano- + G. ophthalmos, eye]
Nanophyetus salmincola
A digenetic fish-borne fluke (family Nanophyetidae) of dogs and other fish-eating mammals; the vector of Neorickettsia helmintheca, the agent of salmon poisoning. SYN: ...
Nanta
See Gandy-N. disease.
nanukayami
SYN: n. fever.
nape
SYN: nucha.
napex
The area of the scalp just below the occipital protuberance.
naphazoline hydrochloride
A sympathomimetic amine, used as a topical vasoconstrictor; available as n. nitrate, with the same uses. SYN: naphthazoline hydrochloride.
naphtha
SYN: petroleum benzin. [G.] - coal tar n. SYN: benzene. - wood n. SYN: methyl alcohol.
naphthalene
A carcinogenic and toxic hydrocarbon obtained from coal tar; used for many syntheses in industry and in some moth repellents; n. can cause an attack of hemolytic anemia in ...
naphthalenol
SYN: naphthol.
naphthalin
SYN: naphthalene.
naphthazoline hydrochloride
SYN: naphazoline hydrochloride.
naphthol
A phenol of naphthalene, occurring in two forms: α-n., a dye intermediate used in cytochemistry for l-arginine localization; β-n., also known as isonaphthol, used as an ...
naphthol yellow S
An acid dye used as a stain for basic proteins in microspectrophotometry.
naphtholate
A compound of naphthol in which the hydrogen in the hydroxyl radical is substituted by a base.
naphthoquinone
1. A quinone derivative of naphthalene, reducible to naphthohydroquinone; 1,4-n. derivatives have vitamin K activity ( e.g., menaquinone). 2. A class of compounds containing ...
naphthyl
The radical of naphthalene, C10H7–.
napier
SYN: neper. [John N., Scottish mathematician, 1550–1617]
naproxen
A nonsteroidal anti-inflammatory analgesic agent used in the treatment of rheumatoid conditions.
napsylate
USAN-approved contraction for 2-naphthalenesulfonate.
narceine
An alkaloid of opium; C23H27NO8. Ethylnarceine is a narcotic, analgesic, and antitussive.
narcissism
1. A state in which one interprets and regards everything in relation to oneself and not to other persons or things. 2. Self-love, which may include sexual attraction toward ...
narco-
Stupor, narcosis. [G. narkoo, to benumb, deaden]
narcoanalysis
Psychotherapeutic treatment under light anesthesia, originally used in acute combat cases during World War II; also has been used in the treatment of childhood trauma. SEE ALSO: ...
narcohypnia
A general numbness sometimes experienced at the moment of waking. [ narco- + G. hypnos, sleep]
narcohypnosis
Stupor or deep sleep induced by hypnosis. [ narco- + G. hypnos, sleep]
Narcolepsy
A neurological disorder marked by a sudden recurrent uncontrollable compulsion to sleep. Narcolepsy is often associated with cataplexy (a sudden loss of muscle tone and ...
narcoleptic
1. A sleep-inducing drug. 2. A person with narcolepsy.
narcosis
General and nonspecific reversible depression of neuronal excitability, produced by a number of physical and chemical agents, usually resulting in stupor rather than in ...
narcosynthesis
SYN: narcoanalysis.
narcotherapy
Psychotherapy conducted with the patient under the influence of a sedative or narcotic.
narcotic
1. Originally, any drug derived from opium or opium-like compounds with potent analgesic effects associated with both significant alteration of mood and behavior and potential ...
narcotism
1. Stuporous analgesia induced by a narcotic. 2. Addiction to a narcotic.
Nares
The nostrils. The word "nares" is straight out of Latin (still another reason why you should have taken Latin in school or, if you did, should have studied harder).
naris
Anterior opening to the nasal cavity. SYN: anterior n., external n., nostril, prenaris. [L.] - anterior n. SYN: n.. - external n. SYN: n.. - internal n. obsolete term for ...
NARP
NARP stands for Neuropathy, Ataxia and Retinitis Pigmentosa. NARP is a disease featuring weakness of the muscles near the trunk, ataxia (wobbliness), retinal disease, seizures ...
narrowband
A limited band of sound frequencies, as opposed to the wideband of frequencies also known as white noise; used to mask hearing in the nontest ear in hearing measurement.
Nasal
Having to do with the nose. Nasal drops are intended for the nose, not (for example) the eyes. The word "nasal" came from the Latin "nasus" meaning the nose or ...
Nasal decongestants
Drugs that shrink the swollen membranes in the nose and make it easier to breath. Decongestants can be taken orally or by nasal spray. Decongestant nasal spray should not be ...
Nasal passage
The walls of the nasal passages are coated with respiratory mucous membranes which contain innumerable tiny hair-like cells that act to move waves of mucus toward the throat. ...
Nasal septum
The dividing wall within the nose. The nasal septum runs down the middle of the nose creating two sides to the nose, each containing a passageway that ends in a nare (nostril). ...
Nasal septum deviation
Failure of the nasal septum to be in the midline where it is supposed to be. (The nasal septum is the wall inside the nose that runs down the middle dividing it into two sides.) ...
Nasal septum hematoma
An accumulation of blood within the nasal septum, the wall inside the nose that runs down the middle dividing it into two sides. Most nasal septum hematomas are due to trauma. ...
Nasal septum perforation
A hole in the nasal septum, the wall inside the nose that runs down the middle dividing it into two sides. The hole provides a direct communication between the two ...
nascent
1. Beginning; being born or produced. 2. Denoting the state of a chemical element at the moment it is set free from one of its compounds. [L. nascor, pres. p. nascens, to be ...
nasioiniac
Relating to the nasion and inion; denoting the distance in a straight line between the frontonasal suture and the external occipital protuberance.
nasion
A point on the skull corresponding to the middle of the nasofrontal suture. SYN: nasal point. [L. nasus, nose]
Nasmyth
Alexander, London dentist, 1789–1849. See N. cuticle, N. membrane.
Naso-
Prefix referring to the nose. For example, nasogastric refers to the passage from the nose to the stomach. * * * The nose. [L. nasus]
naso-oral
Relating to the nose and mouth.
nasoantral
Relating to the nose and the maxillary sinus.
nasociliary
Relating to nose and eyelids. See n. nerve.
nasofrontal
Relating to the nose and forehead, or to the nasal cavity and frontal sinuses.
Nasogastric
Nasogastric refers to the passage from the nose to the stomach. A nasogastric tube is one that is passed through the nose (via the nasopharynx and esophagus) down into the ...
Nasogastric tube
A nasogastric tube is one that is passed through the nose (via the nasopharynx and esophagus) down into the stomach. A nasogastric tube is a flexible tube made of rubber or ...
nasolabial
Relating to the nose and upper lip. [ naso- + L. labium, lip]
nasolacrimal
Relating to the nasal and the lacrimal bones, or to the nasal cavity and the lacrimal ducts.
nasopalatine
Relating to the nose and the palate.
nasopharyngeal
Relating to the nose or nasal cavity and the pharynx. SYN: rhinopharyngeal (1).
nasopharyngolaryngoscope
An instrument, often of fiberoptic type, used to visualize the upper airways and pharynx.
nasopharyngoscope
Telescopic instrument, electrically lighted, for examination of the nasal passages and the nasopharynx.
nasopharyngoscopy
Examination of the nasopharynx by flexible or rigid optical instruments, or with a mirror. [ nasopharynx + G. skopeo, to view]
Nasopharynx
: The area of the upper throat behind the nose. The word "nasopharynx" is a hybrid — part Latin, part Greek. " Naso-" is a prefix that has to do with the nose. It comes from ...
nasorostral
Relating to the nasal cavity and the rostrum of the sphenoid bone.
nasosinusitis
Inflammation of the nasal cavities and of the accessory sinuses.
Nasse
Christian Friedrich, German physician, 1788–1851.
Nasse law
See under law.
nasus
1. SYN: external nose. 2. SYN: nose. [L.] - n. externus SYN: external nose.
natal
1. Relating to birth. [L. natalis, fr. nascor, pp. natus, to be born] 2. Relating to the buttocks or nates. [L. nates, buttocks]
natality
The birth rate; the ratio of births to the general population. [see natal (1)]
natamycin
SYN: pimaricin.
nates
SYN: buttocks. [L. pl. of natis]
National Academies
Collectively, the four National Academies of the United States — the National Academy of Sciences, the National Academy of Engineering, the Institute of Medicine, and the ...
National board exams
The National board exams in medicine refer to the United States Medical Licensing Examination (USMLE). This exam is sponsored by The Federation of State Medical Boards (FSMB) of ...
National Center for Complementary and Alternative Medicine (NCCAM)
A part of the National Institutes of Health (NIH), this center "conducts and supports basic and applied research and training and disseminates information on complementary and ...
National Center for Research Resources (NCRR)
One of the Centers of the National Institutes of Health, whose mission is to “advance biomedical research and improves human health through research projects and shared ...
National Eye Institute (NEI)
One of the US National Institutes of Health, NEI’s mission is to “conduct and support research, training, health information dissemination, and other programs with respect to ...
National Formulary
An official compendium formerly issued by the American Pharmaceutical Association but now published by the United States Pharmacopeia l Convention for the purpose of providing ...
National Heart, Lung, and Blood Institute (NHLBI)
One of the National Institutes of Health in the U.S., the NHLBI’s mission is to “provide leadership for a national research program in diseases of the heart, blood vessels, ...
National Human Genome Research Institute (NHGRI)
One of the newest of the National Institutes of Health (NIH), NHGRI’s mission in formal terms is to “support the NIH component of the Human Genome Project, a worldwide ...
National Institute for Occupational Safety and Health
Known for short as NIOSH, a US Federal agency responsible for conducting research and making recommendations for the prevention of work-related disease and injury. Despite its ...
National Institute of Allergy and Infectious Diseases (NIAID)
One of the U.S. National Institutes of Health (NIH), the mission of the NIAID is “to support and conduct research and research training (that) strives to understand, treat, and ...
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)
One of the National Institutes of Health in the U.S. As its somewhat cumbersome name indicates, NIAMS’s mission is a broad and important one, namely to “conduct and support a ...
National Institute of Child Health and Human Development (NICHD)
One of the US National Institutes of Health, NICHD is in a sense the NIH for kids in that it is concerned with child health. The mission of the NICHD is, in formal terms, to ...
National Institute of Dental and Craniofacial Research (NIDCR)
One of the National Institutes of Health (NIH) in the U.S., the NIDCR is for dental and other craniofacial diseases. NIDCR’s mission is, in formal terms, to “provide ...
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
One of the National Institutes of Health in the U.S., the NIDDK has a multisystem name and a comparably broad mission, namely, to ”conduct and support basic and applied research ...
National Institute of Environmental Health Sciences (NIEHS)
A part of the National Institutes of Health (NIH) in the United States. NIEHS states that its mission is to “reduce the burden of human illness and dysfunction from ...
National Institute of General Medical Sciences (NIGMS)
One of the National Institutes of Health in the U.S., NIGMS’s mission is to “support basic biomedical research that is not targeted to specific diseases or disorders. Among ...
National Institute of Mental Health (NIMH)
One of the National Institutes of Health in the U.S., NIMH’s mission is to “provide national leadership dedicated to understanding, treating, and preventing mental illnesses ...
National Institute of Neurological Disorders and Stroke (NINDS)
One of the National Institutes of Health in the U.S., the NINDS’s mission is to “support and conduct research and research training on the normal structure and function of the ...
National Institute of Nursing Research (NINR)
One of the National Institutes of Health, NINR’s mission is to “sponsor research that focuses on the clinical care of individuals and on their responses to actual or potential ...
National Institute on Aging (NIA)
One of the US National Institutes of Health (NIH). The mission of the National Institute on Aging is to “lead a national program of research on the biomedical, social, and ...
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
One of the National Institutes of Health, NIAAA’s mission is to “conduct research focused on improving the treatment and prevention of alcoholism and alcohol-related problems ...
National Institute on Deafness and Other Communication Disorders (NIDCD)
One of the US National Institutes of Health. The mission of the National Institute on Deafness and Other Communication Disorders is to ”conduct and support biomedical research ...
National Institute on Drug Abuse (NIDA)
One of the National Institutes of Health in the U.S., NIDA’s mission is to “lead the nation in bringing the power of science to bear on drug abuse and addiction through ...
National Institutes of Health (NIH)
The National Institutes of Health (NIH) is an important U.S. health agency. It is devoted to medical research. Administratively under the Department of Health and Human Services ...
National Institutes of Health Clinical Center (CC)
The clinical research facility of the National Institutes of Health (NIH) in the U.S. As a national resource, the CC’s mission is to “provide the patient care, services, and ...
National Library of Medicine (NLM)
The world's largest medical library, the U.S. National Library of Medicine (NLM) is part of the National Institutes of Health (NIH). The NLM has as its mission to collect, ...
natremia, natriemia
The presence of sodium in the blood. [ natrium, sodium, + G. haima, blood]
natrexone hydrochloride
An orally active narcotic antagonist used in maintenance therapy of detoxified, formerly opioid-dependent, patients.
natriferic
Tending to increase sodium transport. [ natrium + L. fero, to carry]
natrium
SYN: sodium. [Ar. natrum, fr. G. nitron, carbonate of soda]
Natriuresis
The excretion of an excessively large amount of sodium in the urine. Natriuresis is similar to diuresis (the excretion of an unusually large quantity of urine), except that in ...
Natriuretic
Causing natriuresis, the excretion of an excessively large amount of sodium in the urine. A hybrid of the Latin natrium = sodium and the Greek ouresis = a making water. * * * ...
Natriuretic peptide
One of the peptides that causes natriuresis, the excretion of an excessively large amount of sodium in the urine. The natriuretic peptides are produced by the heart and ...
Nattrassia mangiferae
A dematiaceous mold, previously known as Hendersonula toruloidea, that causes onychomycosis and phaeohyphomycosis. Scytalidium dimidiatum is a synanamorph. SYN: Hendersonula ...
Natural family planning
Also known as fertility awareness, periodic abstinence and the rhythm method, this approach entails not having sexual intercourse on the days of a woman's menstrual cycle ...
Natural pacemaker
The natural pacemaker of the heart is the sinus node, one of the major elements in the cardiac conduction system, the system that controls the heart rate. This stunningly ...
Nature (journal)
The name of a venerable British scientific journal that has over the past century or so published much of importance to medicine and the biomedical sciences. There are now, in ...
Naturopath
A person who practices naturopathy, a drugless system of therapy based on the use of physical forces such as heat, water, light, air and massage. * * * One who practices ...
naturopathic
Relating to or by means of naturopathy.
Naturopathic medicine
is an American healthcare profession, that is almost 100 years old. It was founded as a formal healthcare system at the turn of the century by medical practitioners from various ...
Naturopathy
A system of therapy based on preventative care, and on the use of heat, water, light, air, and massage as primary therapies for disease. Some naturopaths use no medications, ...
naupathia
SYN: seasickness. [G. naus, ship, + pathos, suffering]
Nausea
Nausea is the urge to vomit. It can be brought by many causes including, systemic illnesses, such as influenza, medications, pain, and inner ear disease. * * * An inclination ...
nauseant
1. Nauseating; causing nausea. 2. An agent that causes nausea.
nauseate
To cause an inclination to vomit.
nauseated
Affected with nausea. SYN: sick (2).
nauseous
1. Nauseated. 2. Causing nausea.
Nauta
Walle J.H., U.S. neuroscientist, *1916. See N. stain.
Navel
The umbilicus, the former site of attachment of the umbilical cord, usually found in about the middle of the abdominal wall. The appearance of the navel depends on how the cord ...
navicula
A small boat-shaped structure. [L. dim of navis, ship]
navicular
Flattened, medially placed tarsal bone, concave on its posterior surface to accommodate the head of the talus, and convex on its anterior surface to articulate with the three ...
Nb
Symbol for niobium.
NBT
Abbreviation for nitroblue tetrazolium.
NCCAM (National Center for Complementary and Alternative Medicine)
A part of the National Institutes of Health (NIH), this center "conducts and supports basic and applied research and training and disseminates information on complementary and ...
NCI (National Cancer Institute)
The National Cancer Institute is one of the National Institutes of Health (NIH) in the U.S. The mission of the NCI is to “lead a national effort to reduce the burden of cancer ...
NCRR
Stands for National Center for Research Resources, one of the Centers of the National Institutes of Health. NCRR’s mission is to “advance biomedical research and improves ...
Nd
Symbol for neodymium.
NDP
Abbreviation for nucleoside diphosphate.
Ne
Symbol for neon.
Nearsightedness
The ability to see near objects more clearly than distant objects. Also called myopia. Myopia can be caused by a longer-than-normal eyeball or by any condition that prevents ...
nearthrosis
A new joint; e.g., a pseudarthrosis arising in an ununited fracture, or an artificial joint resulting from a total joint replacement operation. SYN: neoarthrosis. [G. neos, new, ...
nebramycin
A complex of substances produced by Streptomyces tenebrarius; an antibacterial agent.
nebul.
Abbreviation for n..
nebula
1. A translucent foglike opacity of the cornea. 2. A class of oily preparations, intended for application by atomization. See spray. 3. A spray. [L. fog, cloud, mist]
nebularine
A toxic nucleoside isolated from the mushroom Agaricus nebularis and from Streptomyces sp. SYN: 9-β-ribofuranosylpurine, purine ribonucleoside, ribosylpurine.
nebulin
A very large protein, constituting about 3% of skeletal muscle protein; may aid in the organization of actin filaments as well as in actin polymerization. [L. nebula, mist, fog, ...
nebulization
Spraying or vaporization. [L. nebula, mist]
Nebulization, heated
Administration of medication via fine spray that has been heated to increase its water content.
nebulize
To break up a liquid into a fine spray or vapor; to vaporize. [L. nebula, mist]
Nebulizer
A device for administering a medication by spraying a fine mist into the nose. Also known as an atomizer. * * * A device used to reduce liquid medication to extremely fine ...
Necator
A genus of nematode hookworms (family Ancylostomatidae, subfamily Necatorinae) distinguished by two chitinous cutting plates in the buccal cavity and fused male copulatory ...
necatoriasis
Hookworm disease caused by Necator, the resulting anemia being usually less severe than that from ancylostomiasis.
neck
1. Part of body by which the head is connected to the trunk : it extends from the base of the cranium to the top of the shoulders. 2. In anatomy, any constricted portion having a ...
Neck, chronic stiff
Also called torticollis or spasmodic torticollis, this is the most common of the focal dystonias: a state of abnormal — either excessive of inadequate — muscle tone. In this ...
Neck, wry
Medically called spasmodic torticollis, or torticollis. The most common of the focal dystonias. In torticollis, the muscles in the neck that control the position of the head ...
necklace
Term used to describe a skin rash that encircles the neck. - Casal n. a dermatitis partly or completely encircling the lower part of the neck in pellagra.
necr-
See necro-.
necrectomy
Operative removal of any necrosed tissue. [ necr- + G. ektome, excision]
necro-, necr-
Death, necrosis. [G. nekros, corpse]
necrobacillosis
Any disease with which the bacterium Fusobacterium necrophorum is associated.
necrobiosis
1. Physiologic or normal death of cells or tissues as a result of changes associated with development, aging, or use. 2. Necrosis of a small area of tissue. [necro- + G. bios, ...
necrobiotic
Pertaining to or characterized by necrobiosis.
necrocytosis
A process that results in, or a condition that is characterized by, the abnormal or pathologic death of cells. [necro- + G. kytos, cell, + -osis, condition]
necrogenic
Relating to, living in, or having origin in dead matter. SYN: necrogenous. [necro- + G. genesis, origin]
necrogenous
SYN: necrogenic.
necrogranulomatous
Obsolete term for the characteristics of a granuloma with central necrosis.
necrologist
A student of, or a specialist in, necrology.
necrology
The science of the collection, classification, and interpretation of mortality statistics. [necro- + G. logos, study]
necrolysis
Necrosis and loosening of tissue. [necro- + G. lysis, loosening] - toxic epidermal n. (TEN) a syndrome in which a large portion of the skin becomes intensely erythematous with ...

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