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amantadine hydrochloride
An antiviral agent used for influenza; also used to treat parkinsonism where it increases dopamine release and reduces its reuptake into dopaminergic nerve terminals of ...
SYN: bitters (2). [neut. pl. of L. amarus, bitter]
amaranth, amaranthum
An azo dye; a soluble reddish brown powder, the color turning to magenta red in solution; used as a food, pharmaceutical, and cosmetic coloring agent, and occasionally in ...
A name applied to various bitter principles derived from plants, especially to a poisonous substance, 2,4,5-triphenylimidazoline, obtained from oil of bitter almond. [L. amarus, ...
A bitter extractive that does not belong to the class of glycosides, alkaloids, or any of the known proximate principles of plants. [L. amarus, bitter, + G. eidos, like]
Resembling bitters; having a slightly bitter taste.
One of a class of vegetable drugs of bitter taste, such as gentian and quassia, used as appetizers and tonics. [neut. of L. amarus, bitter]
A rare condition wherein the normal growth of the breast or nipple does not occur. Unilateral amastia (just on one side) is often associated with absence of the pectoral ...
SYN: Leishman- Donovan body. [G. a- priv. + mastix, whip]
An abnormal and persistent fear of dust. Sufferers experience anxiety even though they realize dust poses no threat. From the Greek "amathos" (sand) and "phobos" (fear). * * ...
One of a group of bicyclic octapeptides from death-cap fungus and deadly agaric (Amanita phalloides).
Blindness, especially that occurring without apparent change in the eye itself, as from a brain lesion. [G. amauros, dark, obscure, + -osis, condition] - a. congenita of Leber ...
Amaurosis fugax
A symptom described as a shade coming down over the eye. A partial or complete loss of sight that is temporary. This temporary interference with vision is usually related to ...
Relating to or suffering from amaurosis.
Amaurotic familial idiocy
An outdated term for Tay-Sachs disease (TSD) which is concisely defined by OMIM (Online Mendelian Inheritance in Man) as “an autosomal recessive, progressive neurodegenerative ...
Rarely used term for morbid fear of, or of riding in, a vehicle. [G. amaxa, hamaxa, a carriage, + phobos, fear]
A condition wherein the breast tissue is absent, but the nipple is present. Amazia typically is a result of radiation or surgery. In amazia, the breast tissue (or what tissue was ...
Loss of taste from both sides of the tongue. [L. ambo, both, + G. a- priv. + geusis, taste]
ambenonium chloride
A cholinesterase inhibitor similar to neostigmine in actions; used chiefly in the management of myasthenia gravis and occasionally for intestinal and urinary tract obstruction. ...
Acronym for advanced multiple-beam equalization radiography.
1. A hard, dark yellow to tan, fossilized resin derived from pine trees. 2. See a. codon. [Ar. anbar]
Emil, U.S. otologist, 1868–1948. See A. lateral sinus line.
A grayish pathologic secretion from the intestine of the sperm whale that occurs as a flammable waxy mass (melting point about 60°C), insoluble in water; contains cholesterol ...
Around; on all (both) sides; both, double; corresponds to G. amphi-. SEE ALSO: ambo-. [L., around, about, akin to ambo, both]
The ability to use both hands with equal ease. SYN: ambidextrism.
SYN: ambidexterity.
Having equal facility in the use of both hands.
Surrounding, encompassing; pertaining to the environment in which an organism or apparatus functions. [L. ambiens, going around]
Condition of being ambiguous; uncertainty. - genital a. incomplete development of fetal genitalia as a result of excessive androgen action on a female fetus or inadequate ...
1. Having more than one interpretation. 2. In anatomy, wandering; having more than one direction. 3. In neuroanatomy, applied to a nucleus (nucleus ambiguus) supplying special ...
Relating to both sides. [ ambi- + L. latus, side]
Awkwardness in the use of both hands. SYN: ambisinister, ambisinistrous. [ ambi- + L. laevus, left]
1. Denoting sexual characteristics found in both sexes, e.g., breast, pubic hair. 2. Slang term for bisexual.
SYN: ambilevous. [ ambi- + L. sinister, left]
SYN: ambilevous.
The coexistence of antithetical attitudes or emotions toward a given person or thing, or idea, as in the simultaneous feeling and expression of love and hate toward the same ...
Relating to or characterized by ambivalence.
One who falls between the two extremes of introversion and extroversion, possessing some of the tendencies of each.
Dullness, dimness; blunt, dull, dim, dimmed. [G. amblys, blunt, dulled; faint, dim]
A dimunition in the sense of taste. [ ambly- + G. geusis, taste]
Inducing amblyopia. [ amblyopia + -genic]
A genus of ornate, hard ticks (family Ixodidae) characterized by having eyes, festoons, and deeply imbedded ventral plates near the festoons in males. [ ambly- + G. omma, eye, ...
Impaired vision in an eye due to a disorder of the brain cells that control the vision in that eye, not usually due to a problem with the eye itself. Amblyopia is caused by lack ...
Amblyopia, nocturnal
Amblyopia refers to blindness so nocturnal amblyopia is, literally, night blindness. Listed in medical dictionaries under "Nyctalopia" from the Greek nyct (night) + aloas ...
Relating to, or suffering from, amblyopia.
A reflecting stereoscope used to evaluate or simulate binocular vision. SEE ALSO: haploscope. [ amblyopia + G. skopeo, to view] - major a. an a. in which intensity of ...
Around; on all (both) sides; corresponds to G. ampho-. SEE ALSO: ambi-. [L. ambo, both]
Ehrlich term for his concept, now obsolete, of the structure of complement-fixing antibody; now used chiefly to denote the anti-sheep erythrocyte antibody used in the hemolytic ...
SYN: incudomalleal.
A principle in ragweed related to absinthin.
An intestinal antispasmodic.
Although you are undoubtedly familiar with the sound of the siren and the sight of the flashing lights of the ambulance, you may not necessarily know that the ambulance began as a ...
Means the same as "ambulatory" (able to ambulate, walk about).
Able to ambulate, to walk about, not bed-ridden or hospitalized.
Ambulatory care
Medical care (including diagnosis, observation, treatment and rehabilitation) provided on an outpatient basis. Ambulatory care is given to persons who are not confined to a ...
ambulatory, ambulant
Walking about or able to walk about; denoting a patient who is not confined to bed or hospital as a result of disease or surgery. [L. ambulans, walking]
A diuretic and bronchodilator.
AMC (arthrogryposis multiplex congenita)
AMC stands for arthrogryposis multiplex congenita, a disorder that develops before birth (prenatal) is evident at birth (congenital) and involves limited mobility of many ...
A glucocorticoid used topically in the treatment of dermatoses.
Also amoeba. A single-celled (protozoan) organism that constantly changes shape. The word “ameba” is from the Greek “amoibe” meaning “change.” Ameba can infect the ...
SYN: amebicide.
1. SYN: ameboidism (1). 2. SYN: ameboididity.
The state of being infected with amebae, especially with the ameba Entamoeba histolytica. * * * Infection with the protozoon Entamoeba histolytica. [ ameba + G. -iasis, ...
Relating to, resembling, or caused by amebas.
Amebic colitis
Amebic dysentery (inflammation of the intestine) with ulcers in the colon due to infection with an ameba (Entamoeba histolytica), a single-celled parasite transmitted to humans ...
Destructive to amebas.
Any agent that causes the destruction of amebas. SYN: amebacide. [ ameba + L. caedo, to kill]
Of the shape or appearance of an ameba. [ ameba + L. forma, shape]
Obsolete term for amebiasis.
Obsolete term for amebiasis.
1. A wandering cell found in invertebrates. 2. Obsolete term for leukocyte. 3. An in vitro tissue culture leukocyte. [ ameba, + kytos, cell]
1. Resembling an ameba in appearance or characteristics. 2. Of irregular outline with peripheral projections; denoting the outline of a form of colony in plate culture. [ ameba ...
The power of locomotion after the manner of an ameboid cell. SYN: amebaism (2).
1. The performance of movements similar to those of an ameba. SYN: amebaism (1). 2. Denoting a condition sometimes seen in certain nerve cells.
A nodular, tumorlike focus of proliferative inflammation sometimes developing in chronic amebiasis, especially in the wall of the colon. SYN: amebic granuloma. [ ameba + G. ...
Term applied to the excysted young amebas of Entamoeba species that emerge from the cyst in the human or vertebrate gut and their immediate progeny, usually totalling eight, ...
A minute ameba.
The presence of amebas in the urine. [ ameba + G. ouron, urine]
Lacking in melanin. [G. a- priv. + melas, black]
Congenital absence of a limb or limbs. Autosomal dominant, autosomal recessive, and X-linked forms have been reported, but most cases are sporadic. [G. a- priv. + melos, a limb]
Not a word confined to medicine but a word used in medicine, amelioration is synonymous with improvement. If a patient's condition shows amelioration, the patient is clearly ...
One of the columnar epithelial cells of the inner layer of the enamel organ of a developing tooth, concerned with the formation of enamel matrix. SYN: enamel cell, enameloblast, ...
A benign odontogenic epithelial neoplasm that histologically mimics the embryonal enamel organ but does not differentiate to the point of forming dental hard tissues; it behaves ...
SYN: dentinoenamel.
The deposition and maturation of enamel. SYN: enamelogenesis. - a. imperfecta a group of hereditary ectodermal disorders in which the enamel is defective in structure or ...
A class of proteins that form much of the organic matrix during the early development of tooth enamel. [ amelogenesis + -in]
Better known as amenorrhea, amenia is the absence or cessation of menstruation. Amenorrhea is conventionally divided into primary and secondary amenorrhea. With primary ...
Absence or cessation of menstruation. Amenorrhea is conventionally divided into primary and secondary amenorrhea: {{}}Primary amenorrhea — menstruation never takes place. It ...
amenorrheal, amenorrheic
Relating to, accompanied by, or due to amenorrhea.
1. SYN: mental retardation. 2. SYN: dementia. [L. madness, fr. ab, from, + mens, mind] - nevoid a. SYN: Brushfield-Wyatt disease. - phenylpyruvic a. a. accompanied by the ...
Pertaining to amentia.
American Academy of Family Physicians (AAFP)
Originally, most physicians in the U.S. (and elsewhere) were family doctors. Then there was a strong move away from family medicine toward the medical specialties in the U.S. The ...
American Academy of Orthopaedic Surgeons
The professional organization of American orthopaedists. Literally, the practice of child straightening, orthopaedics is the branch of surgery that is broadly concerned with the ...
American Academy of Pediatrics (AAP)
Although the abbreviation AAP stands for multiple organizations, the American Academy of Pediatrics (AAP) does provide a suitable example of a health professional organization. ...
American Association for the Advancement of Science
Spoken of as the "triple-AS", the American Association for the Advancement of Science is an organization concerned not only with the biomedical sciences but with all of the ...
American Association of Dermatology
One of a multitude of professional societies in the health arena. The AMA (the American Medical Association) is a better known example in the U.S. Only a small selection of the ...
American College of Obstetricians and Gynecologists (ACOG)
The American College of Obstetricians and Gynecologists is an organization concerned with the quality of ob/gyn practice in the U.S. It is called "a cog." The members of ACOG are ...
American College of Surgeons (ACS)
The American College of Surgeons (ACS) was formed in 1913 under the aegis of Dr. John Miller Turpin Finney "to elevate the standard of surgery, to establish a standard of ...
American Dental Association (ADA)
The mission statement of the ADA reads as follows: "The ADA is the professional association of dentists dedicated to serving both the public and the profession of dentistry. The ...
American Journal of Public Health
A monthly journal that publishes original research articles that are peer-reviewed in both "general and specialized areas of the science, art, and practice of public health. These ...
American Law Institute formulation
Used in certain jurisdictions to determine criminal responsibility in legal proceedings. See criminal insanity.
American Medical Association (AMA)
The AMA's mission statement proclaims: "We are the Voice of the American Medical Profession. "We are the partnership of physicians and their professional associations dedicated to ...
American National Standards Institute
Organization that sets standards for physical measures in the United States.
American Red Cross
The national Red Cross society of the United States, established by Congress to assist in caring for the sick and wounded, serving as a communications link between members of the ...
American Sign Language (ASL)
A hand language with its own syntax and grammar, used primarily by people who are deaf.
American Type Culture Collection (ATCC)
Although little known to the general public, the American Type Culture Collection (ATCC) is a key resource for medical research. It is the world's premier biological culture ...
An element obtained by the bombardment of uranium with neutrons or β decay of plutoniums 241, 242, and 243; atomic no. 95; atomic weight 243.06. 241Am (half-life of 432.2 ...
The condition or quality of not dividing into parts, segments, or merozoites. [G. a- priv. + meros, part]
Endowed with amerism; not dividing into parts or segments.
Bruce N., U.S. molecular geneticist, *1928. See A. assay, A. test.
SYN: methotrexate.
Congenital absence of the uterus; the genetics is obscure. [G. a- priv. + metra, uterus]
ametriodinic acid
SYN: iodamide.
The optic condition in which there is an error of refraction so that with the eye at rest the retina is not in conjugate focus with light rays from distant objects, i.e., only ...
Relating to, or suffering from, ametropia.
AMI (acute myocardial infarction)
An AMI (an acute myocardial infarction) is a heart attack. The term "myocardial infarction" focuses on the heart muscle (the myocardium) and the changes that occur in it due to ...
Asbestos-like; describing thin plates of inflammatory crusting of a cutaneous lesion. [G. amiantus, asbestos]
Having a crystalline appearance like asbestos. SYN: asbestoid. [G. amianthus, asbestos]
Not microbic; not related to or caused by microorganisms.
SYN: submicroscopic.
An enzyme that catalyzes the hydrolysis of monocarboxylic amides to free acid plus NH3; ω-a. acts on amides such as α-ketoglutaramic acid and α-ketosuccinamic acid.
SYN: amidohydrolases.
A substance formally derived from ammonia through the substitution of one or more of the hydrogen atoms by acyl groups, R—CO—NH2, or from a carboxylic acid by replacement of ...
The monovalent radical —C(NH)-NH2.
Enzymes cleaving linear amidines; e.g., arginase, creatinase.
Enzymes catalyzing a transamidination reaction ( e.g., glycine amidinotransferase). SYN: transamidinases.
amido black 10B
An acid diazo dye, C12H14N6O9S2Na2, used as a connective tissue stain, for staining protein in paper chromatography, and in electrophoresis.
Prefix denoting the amide radical, R—CO—NH— or R—SO2—NH—, etc. [am(monia) + -id(e) + -o-]
Enzymes hydrolyzing C—N bonds of amides and cyclic amides; e.g., asparaginase, barbiturase, urease, amidase. SYN: amidases, deamidases, deamidizing enzymes.
amidonaphthol red
An azo dye, C18H13N3S2Na2, used in light and fluorescence microscopy as a real acid counterstain. SYN: azophloxin.
SYN: aminopyrine.
Amidostomum anseris
A species of bloodsucking nematodes, similar to those of the genus Trichostrongylus, that parasitizes the gizzard and sometimes also the proventriculus and esophagus of domestic ...
The oximes of amides with the general formula, R—C(NH2)—NOH. SYN: amide oximes.
The radical of an amide oxime (amidoxime), the terminal H (of the NOH) having been lost.
amikacin sulfate
An aminoglycoside antibiotic agent with antimicrobial activity similar to that of kanamycin; also effective against Pseudomonas aeruginosa.
amiloride hydrochloride
A nonsteroidal compound exerting an effect similar to that of an aldosterone inhibitor, i.e., urinary sodium excretion is enhanced and potassium excretion is reduced; a potassium ...
1. Inability to express ideas by nonverbal communication, such as gestures or signs. 2. Asymbolia; the inability to comprehend the meaning of gestures, signs, symbols, or ...
aminacrine hydrochloride
Bactericidal agent for external use. SEE ALSO: acridine yellow. SYN: 5-aminoacridine hydrochloride, 9-aminoacridine hydrochloride.
To combine with ammonia.
The introduction of an amine moiety into a compound.
A chemical compound containing nitrogen. Amines are derived from ammonia. (The name "amine" was derived from the word "ammonia.") * * * A substance formally ...
Relating to nerve cells or fibers.
Amino acid
One of the 20 building blocks of protein. The sequence of amino acids in a protein and, hence, the function of that protein are determined by the genetic code in the DNA. Amino ...
Prefix denoting a compound containing the radical, —NH2. [am(monia) + in(e) + -o-]
The α-NH2 group or the aminoacyl residue containing it at one end of a peptide or protein (usually at left as written). SYN: NH2-terminal.
aminoacid-tRNA ligases
Recommended name for aminoacyl-tRNA synthetases, e.g., tyrosine-tRNA ligase for tyrosyl-tRNA synthetase.
The presence of excessive amounts of specific amino acid s in the blood. [amino acid + G. haima, blood]
Excretion of amino acid s in the urine, especially in excessive amounts. SYN: hyperaminoaciduria. [amino acid + G. ouron, urine] - hyperbasic a. an inherited disorder associated ...
The radical formed from an amino acid by removal of OH from a COOH group.
aminoacyl adenylate
The product formed by the condensation of the acyl radical of an amino acid and adenosine 5′-monophosphate (originally in the form of adenosine 5′-triphosphate, with ...
Generic term for those compounds in which amino acid s are esterfied through their COOH groups to the 3′- (or 2′-) OH's of the terminal adenosine residues of transfer RNA's ( ...
An enzyme catalyzing hydrolysis of a wide variety of N-acyl amino acid s to the corresponding amino acid and an acid anion. SYN: hippuricase, histozyme.
aminoadipic δ-semialdehyde synthase
A bifunctional enzyme used in lysine degradation; it has a lysine:α-ketoglutarate reductase activity as well as a saccharopine dehydrogenase activity. A deficiency of this ...
SYN: aniline.
aminocaproic acid
An antifibrinolytic agent, used to prevent bleeding in hemophilia, and after heart and prostate surgery when plasminogen or urokinase may be activated.
SYN: carboxamide.
aminocitric acid
Found in acid hydrolysates of ribonucleoprotein in human spleen.
An aromatase inhibitor used in the treatment of breast cancer; blocks the synthesis of estrogen; formerly tried as an anticonvulsant but no longer used for that purpose.
Any one of a group of bacteriocidal antibiotics derived from species of Streptomyces or Micromonosporum and characterized by two or more amino sugars joined by a glycoside ...
Replacement of a halogen in an alkyl or aryl molecule by an amine radical, with elimination of hydrogen halide.
SYN: aminometramide.
Synthetic uracil derivative; an orally effective diuretic that is believed to act by inhibiting the reabsorption of sodium by the renal tubules; used in the treatment of edema ...
A class of penicillin-like antibiotics that chemically contain an amine group; this class includes ampicillin and amoxicillin; used in upper respiratory infections, urinary ...
An enzyme of broad specificity, containing zinc, and catalyzing the hydrolysis of the N-terminal amino acid of a peptide ( i.e., an exopeptidase). An aminopeptidase of broad ...
Enzymes catalyzing the breakdown of a peptide, removing the amino acid at the amino end of the chain ( i.e., an exopeptidase); found in intestinal secretions.
SYN: aminopyrine.
A solubilized form of theophylline; a diuretic, vasodilator, and cardiac stimulant; also used as a bronchodilator in asthma and in veterinary medicine. SYN: theophylline ...
An intestinal antispasmodic.
A folic acid antagonist formerly used in the treatment of acute leukemia and other neoplastic diseases.
Formerly widely used as an antipyretic and analgesic in rheumatism, neuritis, and common colds; may cause leukocytopenia; used to measure total body water. SYN: amidopyrine, ...
A sympathomimetic appetite suppressant.
An enzyme that catalyzes the transfer of an amino group from a donor molecule to a recipient molecule. The donor molecule is usually an amino acid while the recipient (acceptor) ...
Enzymes transferring amino groups between an amino acid to (usually) a 2-keto acid; e.g., l-alanine and 2-ketoglutarate. Often, the amino acid is an α-amino acid. SYN: ...
An effective weed killer that also possesses some antithyroid activity. SYN: amitrole.
An intestinal peptidase that acts on tripeptides, releasing an amino acid and a dipeptide.
Excretion of amines in the urine. [amine + G. ouron, urine]
amiodarone hydrochloride
An antiarrhythmic agent used in control of ventricular and supraventricular arrhythmias. Can cause significant and distinctive pulmonary toxicity.
A leprostatic agent. SYN: thiacetazone.
Direct division of the nucleus and cell, without the complicated changes in the nucleus that occur in the ordinary process of cell reproduction. SYN: direct nuclear division, ...
Relating to or marked by amitosis.
amitriptyline hydrochloride
Chemically and pharmacologically related to imipramine hydrochloride; an antidepressant agent with mild tranquilizing properties, used in the treatment of mental depression and ...
SYN: aminotriazole.
1. Acute myeloid leukemia (also known as acute myelogenous leukemia), a quickly progressive malignant disease in which there are too many immature blood-forming cells in the ...
A calcium-blocking drug of the dihydropyridine series; belongs to the same class of agents as nifedipine.
An instrument for measuring strength of electric current in amperes.
Greek name of Egyptian god, Amun. See A. horn. Friedrich A. von, German ophthalmologist and pathologist, 1799–1861. See A. fissure, A. prominence.
ammonemia, ammoniemia
The presence of ammonia or some of its compounds in the blood, thought to be formed from the decomposition of urea; it usually results in subnormal temperature, weak pulse, ...
A colorless volatile gas, NH3, very soluble in water, capable of forming the weak base, NH4+OH−, which combines with acids to form ammonium compounds. [fr. L. sal ammoniacus, ...
Enzymes removing ammonia or an amino compound nonhydrolytically (hence lyases, EC class 4), by rupture of a C—N bond leaving a double bond (EC subgroup 4.3); e.g., aspartate ...
A gum resin from a plant of western Asia, Dorema ammoniacum (family Umbelliferae); used internally as a stimulant and expectorant, and externally as a counterirritant plaster.
Relating to ammonia.
Containing or combined with ammonia.
Combining form indicating an ammonium group; e.g., trimethylammonioethanol (choline).
The ion, NH4+, formed by combination of NH3 and H+ (the pKa value is 9.24); behaves as a univalent metal in forming a. compounds. - a. benzoate has been used as a stimulant, ...
Excretion of urine that contains an excessive amount of ammonia. SYN: ammoniacal urine. [ ammonia + G. ouron, urine]
The breaking of a chemical bond with the addition of the elements of ammonia (NH2 and H) at the point of breakage. [ ammonia + G. lysis, dissolution]
The process or type of nitrogen excretion in which ammonia and ammonium ions are the primary form by which nitrogen is excreted from an organism. [ ammonia + G. telos, end, ...
Having the property of ammonotelism.
The excretion of ammonia and ammonium ions. Cf.:ammonotelia.
: An impairment or lack of memory. Amnesia after a trauma event can be either antegrade (lack of memory related to events occurring after the event) or retrograde (lack of ...
Amnesia, antegrade
Amnesia in which the lack of memory relates to events occurring after a traumatic occurrence.
Amnesia, retrograde
Amnesia in which the lack of memory relates to events occurring before a traumatic occurrence.
One suffering from amnesia.
Relating to or characterized by amnesia. SYN: amnestic (1).
1. SYN: amnesic. 2. An agent causing amnesia.
The amnion. [G. amnion]
Instrument designed to tear a hole in the amnionic sac without injuring the fetus.
SYN: omphalocele.
Procedure used in prenatal diagnosis to obtain amniotic fluid which can be used for genetic and other diagnostic tests. Informally called * * * Transabdominal aspiration of ...
amniochorial, amniochorionic
Relating to both amnion and chorion.
Formation of the amnion. [ amnio- + G. genesis, production]
Radiography of the amniotic sac after the injection of radiopaque, water-soluble solution into the sac, which outlines the umbilical cord, the placenta, and the soft tissues of ...
Infusion of warmed saline through an intrauterine catheter during labor, for umbilical cord compromise due to low volume of amnionic fluid, or for thick meconium in labor. ...
Broad flat mass on the skin resulting from antenatal adhesion of the amnion. [ amnio- + G. -oma, tumor]
A thin membrane surrounding the fetus during pregnancy. The amnion is the inner of the two fetal membranes (the chorion is the outer one). It contains the amniotic fluid. * * ...
Relating to the amnion. SYN: amniotic.
Inflammation resulting from infection of the amniotic sac, which, in turn, commonly results from premature rupture of the membranes (a condition often associated with neonatal ...
Escape of amniotic fluid. [ amnio- + G. rhoia, flow]
Rupture of the amniotic membrane. [ amnio- + G. rhexis, rupture]
An endoscope for studying amniotic fluid through the intact amniotic sac.
Examination of the amniotic fluid in the lowest part of the amniotic sac by means of an endoscope introduced through the cervical canal. [ amnio- + G. skopeo, to view]
A group of vertebrates whose embryos are enclosed in an amnion; it includes all the reptiles, birds, and mammals.
SYN: amnionic.
Amniotic fluid
The fluid bathing the fetus and serving as a shock absorber.
An instrument for puncturing the fetal membranes. [ amnio- + G. tome, cutting]
Artificial rupture of the fetal membranes as a means of inducing or expediting labor.
A central nervous system depressant with an intermediate duration of action; also used as the sodium salt.
amodiaquine hydrochloride
An antimalarial drug, also used in the treatment of amebic hepatitis; large doses may result in sialorrhea, nausea, vomiting, diarrhea, insomnia, palpitations, spasticity, ...
Ameba, Amoeba.
Also ameba. A single-celled (protozoan) organism that constantly changes shape. The word “ameba” is from the Greek “amoibe” meaning “change.” Ameba can infect the ...
An active peptide released from Entamoeba histolytica that can insert ion channels into liposomes and possesses cytolytic and bactericidal activities. [amoeba + G. poros, ...
A genus of small intestinal tapeworms of birds, seldom possessing more than 30 segments. A. cuneata (A. sphenoides) is a species common in domestic fowl; its cysticercoid is ...
1. A culture-bound mental disorder originally observed in Malaya in which the subject becomes dangerously maniacal (“running a.”). 2. Colloquialism denoting maniacal, wild, ...
An allele that has no phenotypically recognizable product and therefore its existence can be inferred on molecular evidence only, depending on the subtlety of the means of ...
Inability to recognize the size and shape of objects. [G. a- priv. + morphe, shape, + gnosis, recognition]
amorphia, amorphism
Condition of being amorphous (1). [G. a- priv. + morphe, form]
Disorder of recognition of the right side of the body in spatial relationships, caused by a lesion of the left parietal lobe. [G. a- priv. + morphe, form, + synthesis]
1. Without definite shape or visible differentiation in structure. 2. Not crystallized.
A malformed fetus with rudimentary head, limbs, and heart. [G. a- priv. + morphe, form, shape]
A tricyclic antidepressant/anti-psychotic drug; overdose can produce seizures.
A semisynthetic penicillin antibiotic with an antimicrobial spectrum similar to that of ampicillin.
Abbreviation for adenosine monophosphate; specifically, the 5′-monophosphate unless modified by a numerical prefix. See adenylic acid.
AMP deaminase
An enzyme hydrolyzing adenylic acid to inosinic acid and NH3. A deficiency of A. in muscles can lead to excess fatigue following exercise. SYN: adenylic acid deaminase.
Strength of electric current. See ampere.
André-Marie, French physicist, 1775–1836. See ampere, statampere, A. postulate.
The practical unit of electrical current; the absolute, practical a. originally was defined as having the value of 110 of the electromagnetic unit (see abampere and coulomb). ...
Determination of any analyte concentration by measurement of the current generated in a suitable chemical reaction.
See amphi-, ampho-.
Reciprocal sexual selection, i.e., by both male and female. [G. amphi, two-sided, + eklexis, selection]
Closely related in its structure and action to ephedrine and other sympathomimetic amines. A psychostimulant substance that can be abused. - a. (4-chlorophenoxy)acetate same ...
On both sides, surrounding, double; corresponds to L. ambi-. [G. amphi, amphi-, on both sides, about, around]
Relating to a symphysis (1) (amphiarthrosis).
SYN: symphysis (1). [ amphi- + G. arthrosis, joint]
The double-star figure formed by the two astrospheres and their connecting spindle fibers during mitosis. SYN: diaster. [ amphi- + G. aster, star]
Referring to reactions or biologic pathways that serve in both biosynthesis and degradation ( i.e., anabolism and catabolism). [ amphi- + metabolic]
Concave at each end, as the body of a vertebra of a fish. [ amphi- + G. koilos, hollow]
Centering at both ends, said of a rete mirabile that begins by the vessel breaking up into a number of branches and ends by the branches joining again to form the same vessel. [ ...
SYN: amphichromatic.
Having the property of exhibiting either of two colors; e.g., litmus, an a. pigment that is red in acids and blue in alkalis. SYN: amphichroic. [ amphi- + G. chroma, color]
One of the cells located around the bodies of the cerebrospinal and sympathetic ganglionic neurons. SYN: capsule cell. [ amphi- + G. kytos, cell]
In the nervous system of nematodes, a pair of laterally placed minute receptor organs in the cephalic or cervical region. [ amphi- + -id]
Having a complete diploid chromosome set from each parent strain. [amphi + diploid]
A diploid nucleus containing two haploid sets of chromosomes. [ amphi- + G. karyon, kernel]

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