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Слова на букву anch-basi (2629)

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aspermia
Lack of secretion or expulsion of semen following ejaculation.
aspersion
A form of hydrotherapy in which water of a given temperature is sprinkled on the body. [L. aspersio, a sprinkling]
aspheric
Denoting a paraboloidal surface, especially of a lens or mirror, that eliminates spherical aberration. [G. a- priv. + sphaira, sphere]
asphygmia
Temporary absence of pulse. [G. a- priv. + sphygmos, pulse]
asphyxia
Impaired or absent exchange of oxygen and carbon dioxide on a ventilatory basis; combined hypercapnia and hypoxia or anoxia. [G. a- priv. + sphyzo, to throb] - cyanotic a. a. ...
asphyxial
Relating to asphyxia.
asphyxiant
1. Producing asphyxia. SYN: asphyxiating. 2. Anything, especially a gas, that produces asphyxia.
asphyxiate
To induce asphyxia.
asphyxiating
SYN: asphyxiant (1).
asphyxiation
The production of, or the state of, asphyxia.
Aspiculuris tetraptera
The mouse pinworm, an abundant oxyurid nematode of the mouse cecum or large intestine, along with another common oxyurid pinworm of mice, Syphacia obvelata; it is also ...
aspidin
A toxic active principle, C25H32O8, contained in aspidium.
aspidinol
An alcohol, C12H16O4, occurring in aspidium.
aspidium
The rhizomes and stipes of Dryopteris filix-mus (European a. or male fern), or of Dryopteris marginalis (American a. or marginal fern, family Polypodiaceae); used in the ...
aspidosamine
A strong base, C22H28N2O2, derived from quebracho; a toxic irritant.
aspidospermine
An alkaloid, C22H30N2O2, obtained from quebracho, an irritant.
Aspirate
To suck in. A patient may aspirate for example by accidentally drawing material from the stomach into the lungs. A doctor can aspirate a joint. * * * 1. (as′pi-rat′)To ...
Aspiration
: Removal of a sample of fluid and cells through a needle. Aspiration also refers to the accidental sucking in of food particles or fluids into the lungs. * * * 1. Removal, by ...
Aspiration pneumonia
Infection of the lungs due to aspiration (the sucking in of food particles or fluids into the
Aspiration, joint
A procedure whereby a sterile needle and syringe are used to drain joint fluid from the joint. This is usually done as an office procedure or at the bedside in the hospital. The ...
aspirator
An apparatus for removing fluid, air, or tissue by aspiration from any of the body cavities; it consists usually of a hollow needle or trocar and cannula, connected by tubing ...
Aspirin
A good example of a tradename that entered into the language, Aspirin was once the Bayer trademark for acetylsalicylic acid. The first use of what became known as aspirin was by ...
asplenia
Congenital or acquired absence of the spleen ( e.g., after surgical removal). - functional a. absence of splenic function due to spontaneous infarction of the spleen, as occurs ...
asplenic
Having no spleen.
asporogenous
Not producing spores. [G. a- priv. + sporos, seed, + -gen, production]
asporous
Incapable of producing spores. [G. a- priv. + sporos, seed]
asporulate
Nonsporeforming.
Assay
An assay is an analysis done to determine: {{}}The presence of a substance and the amount of that substance. Thus, an assay may be done for example to determine the level of ...
Assay, CEA
CEA (carcinoembryonic antigen) is a protein found in many types of cells but associated with tumors and the developing fetus. CEA is tested in blood. The normal range is Benign ...
Assay, NSE
Neuron-specific enolase (NSE) is a substance that has been detected in patients with certain tumors, namely: neuroblastoma, small cell lung cancer, medullary thyroid cancer, ...
Assembly, DNA
The process of putting fragments of DNA that have been sequenced into their correct chromosomal positions. The pieces of DNA are assembled to reconstitute the sequence of the ...
assessment
Appraisal. - health risk a. (h.r.a.) method of describing an individual's chance of falling ill or dying of a specified condition, based on actuarial calculations that compare ...
Assézat
Jules, French anthropologist, 1832–1876. See A. triangle.
assimilable
Capable of undergoing assimilation. See assimilation.
assimilation
1. Incorporation of digested materials from food into the tissues. 2. Amalgamation and modification of newly perceived information and experiences into the existing cognitive ...
Assistant, physician (PA)
A physician assistant (PA) is a mid-level medical practitioner who works under the supervision of a licensed doctor (an MD) or osteopathic physician (a DO). The physician ...
Assisted living
A type of long-term care facility for elderly or disabled people who are able to get around on their own but who may need help with some activities of daily living, or simply ...
Assisted suicide
Deliberate hastening of death performed by a terminally ill patient with assistance from a doctor, family member, or other individual. See Active euthanasia.
Assistive device
Any device that is designed, made, or adapted to assist a person perform a particular task. For examples, canes, crutches, walkers, wheel chairs, and shower chairs are all ...
Assistive technology
This term may be used to mean an assistive device, but more commonly denotes some kind of electronic or computerized device that helps a disabled person to function more easily ...
Assmann
Herbert, German internist, 1882–1950. See A. tuberculous infiltrate.
associate
1. (a-so′shi-at)Any item or individual grouped with others by some common factor. 2. (a-so′she-at)To accomplish association. - paired associates words, syllables, digits, ...
association
1. A connection of persons, things, or ideas by some common factor. 2. A functional connection of two ideas, events, or psychologic phenomena established through learning or ...
Association (dysmorphology)
In dysmorphology (the study of birth defects), the term "association" has a special meaning, namely, it is the nonrandom occurrence in two or more individuals of a pattern of ...
Association (genetics)
In genetics, the word "association" has a very specific and special meaning. It refers to the occurrence together of two or more characteristics more often than would be expected ...
Association, VATER
An association of birth defects. In dysmorphology (the study of birth defects), the term "association" is the nonrandom occurrence in two or more individuals of a pattern of ...
associationism
In psychology, the theory that man's understanding of the world occurs through ideas associated with sensory experience rather than through innate ideas.
assortment
In genetics, the relationship between nonallelic genetic traits that are transmitted from parent to child more or less independently in accordance with the degree of linkage ...
assumption
Belief posited at the outset of an argument as a basis for deduction and inference. Commonly confused with a hypothesis, a conclusion at the end of the argument or an inference ...
AST
Abbreviation for aspartate aminotransferase.
astasia
Inability, through muscular incoordination, to stand. [G. unsteadiness, from a-priv. + stasis, standing]
astasia-abasia
The inability to either stand or walk in a normal manner; the gait is bizarre and is not suggestive of a specific organic lesion; often the patient sways wildly and nearly ...
astatic
Pertaining to astasia.
astatine
An artificial radioactive element of the halogen series; atomic no. 85, atomic wt. 211. [G. astatos, unstable]
asteatosis
Diminished or arrested secretion of the sebaceous glands. [G. a- priv. + stear (steat-), fat] - a. cutis dry, scaly integument with decrease in sebaceous secretion.
astemizole
An H-1 type histamine-blocking drug with low sedating tendency.
aster
SYN: astrosphere. [Mod. L. fr. G. a., a star] - sperm a. sperm-a..
astereognosis
SYN: tactile agnosia. [G. a- priv. + stereos, solid + gnosis, knowledge]
asterion
A craniometric point in the region of the posterolateral, or mastoid, fontanel, at the junction of the lambdoid, occipitomastoid and parietomastoid sutures. [G. asterios, ...
asteriosaponins
SYN: asteriotoxins.
asteriotoxins
Toxic steroids produced by starfish (Asteroidea). SYN: asteriosaponins.
asterixis
Involuntary jerking movements, especially in the hands, best elicited by having the patient extend the arms, dorsiflex the wrists, and spread the fingers; due to arrhythmic ...
asternal
1. Not related to or connected with the sternum, e.g., a. rib. 2. Without a sternum. [G. a- priv. + sternon, chest]
asternia
Congenital absence of the sternum.
Asterococcus
SYN: Mycoplasma. [Mod. L. fr. G. aster, a star, + kokkos, a berry]
asteroid
Resembling a star. [G. aster, star, + eidos, resemblance]
asthenia
Weakness or debility. SYN: adynamia (1). [G. astheneia, weakness, fr. a- priv. + sthenos, strength] - neurocirculatory a. an obsolete term for a type of anxiety neurosis ...
asthenic
1. Relating to asthenia. 2. Denoting a thin, delicate body habitus.
asthenopia
Subjective symptoms of ocular fatigue, discomfort, lacrimation, and headaches arising from use of the eyes. SYN: eyestrain. [G. astheneia, weakness, + ops, eye] - ...
asthenopic
Relating to or suffering from asthenopia.
asthenospermia
SYN: asthenozoospermia. [G. astheneia, weakness, + sperma, seed, semen]
asthenozoospermia
Loss or reduction of mobility of the spermatozoa, frequently associated with infertility. SYN: asthenospermia. [G. astheneia, weakness + zoos, living, + sperma, seed, semen, + ...
asthma
An inflammatory disease of the lungs characterized by reversible (in most cases) airway obstruction. Originally, a term used to mean “difficult breathing”; now used to denote ...
asthma-weed
1. SYN: lobelia. 2. SYN: Euphorbia pilulifera.
asthmatic
Relating to or suffering from asthma.
asthmogenic
Causing asthma.
Astigmatic
Referring to astigmatism or a person with astigmatism, a common form of visual impairment in which part of an image is blurred, due to an irregularity in the curvature of the ...
Astigmatism
A common form of visual impairment in which part of an image is blurred, due to an irregularity in the curvature of the front surface of the eye, the cornea. The curve of the ...
astigmatometry, astigmometry
Determination of the form and measurement of the degree of astigmatism.
astigmia
SYN: astigmatism.
astomatous
Without a mouth. SYN: astomous.
astomia
Congenital absence of a mouth. [G. a- priv. + stoma, mouth]
astomous
SYN: astomatous.
astragalar
Relating to the astragalus or talus.
astragalectomy
Removal of the astragalus, or talus. [astragalus, + G. ektome, excision]
astragalocalcanean
Relating to both the talus (astragalus) and the calcaneus (os calcis).
astragalofibular
Relating to both the talus (astragalus) and the fibula.
astragaloscaphoid
SYN: talonavicular.
astragalotibial
Relating to both the talus (astragalus) and the tibia.
Astragalus
A genus of plants (family Leguminosae), notably A. mollissimus (locoweed) on the range lands of western North America, capable of taking selenium from the soil and causing ...
astral
Relating to an astrosphere.
Astraphobia
An abnormal and persistent fear of thunderstorms. Sufferers experience anxiety even when they realize the risk of harm is very small. Consequently, when indoors they might seek ...
astrapophobia
Morbid fear of lightning. [G. astrape, lightning, + phobos, fear]
astriction
1. Astringent action. 2. Compression to arrest hemorrhage.
astringent
1. Causing contraction or shrinkage of the tissues, arrest of secretion, or control of bleeding. 2. An agent having these effects. [L. astringens]
astroblast
A primitive cell developing into an astrocyte. [G. astron, star, + blastos, germ]
astroblastoma
A relatively poorly differentiated glioma composed of young, immature, neoplastic cells of the astrocytic series, frequently arranged radially with short fibrils terminating on ...
astrocele
SYN: centrosphere. [G. astron, star, + koilia, hollow]
astrocyte
One of the large neuroglia cells of nervous tissue. SEE ALSO: neuroglia. SYN: astroglia cell, astroglia, Cajal cell (2), Deiters cells (2), macroglia cell, macroglia, ...
astrocytoma
A glioma derived from astrocytes. [G. astron, star, + kytos, cell, + -oma, tumor] - anaplastic a. intermediate grade a. characterized by increased cellularity, nuclear ...
astrocytosis
An increase in the number of astrocytes, frequently observed in an irregular, poorly or moderately well-defined zone adjacent to degenerative lesions ( e.g., encephalomalacia), ...
astroependymoma
A glial neoplasm composed of a mixed population of astrocytic and ependymal cells.
astroglia
SYN: astrocyte. [G. astron, star, + neuroglia]
astroid
Star-shaped. [G. astroeides, fr. astron, star, + eidos, resemblance]
astrokinetic
Relating to movement of the centrosome and astrosphere of a dividing cell. [G. astron, star, + kinesis, movement]
astrosphere
A set of radiating microtubules extending outward from the cytocentrum and centrosphere of a dividing cell. SYN: aster, attraction sphere, Lavdovsky nucleoid, paranuclear ...
Astrovirus
A small RNA virus and the only genus in the family Astroviridae; it is associated with diarrhea and is detected in the feces of numerous animals.
Astrup
Poul, Danish clinical chemist, *1915. See micro- A. method.
Astwood
Edwin B., U.S. endocrinologist, 1909–1976. See A. test.
asverin
An antitussive.
Asx
Symbol meaning Asp or Asn.
asyllabia
Form of alexia in which one recognizes individual letters, but cannot comprehend them when arranged collectively in syllables or words. [G. a- priv. + syllable, syllable]
asylum
Old term for an institution for the housing and care of those who by reason of age or mental or bodily infirmities are unable to care for themselves. [L. fr. G. asylon, a ...
asymbolia
A form of aphasia in which the significance of signs and symbols is not appreciated. SYN: sight blindness. [G. a- priv. + symbolon, an outward sign]
asymmetric
Not symmetric; denoting a lack of symmetry between two or more like parts.
asymmetry
1. Lack of symmetry; disproportion between two normally alike parts. 2. Significant difference in amplitude or frequency of EEG activity recorded simultaneously from the two ...
Asymptomatic
Without symptoms. For example, an asymptomatic infection is an infection with no symptoms. * * * Without symptoms, or producing no symptoms.
asymptotic
Pertaining to a limiting value, for example of a dependent variable, when the independent variable approaches zero or infinity.
asynclitism
Absence of synclitism or parallelism; may be used, e.g., to refer to the axis of the presenting part of the child and the pelvic planes in childbirth, to the dental arches, or ...
asynechia
Discontinuity of structure. [G. a- priv. + synecheia, continuity]
asynergia
SYN: asynergy. [G. a- priv. + syn, with, + ergon, work]
asynergic
Characterized by asynergy.
asynergy
Lack of coordination among various muscle groups during the performance of complex movements, resulting in loss of skill and speed. When severe, results in decomposition of ...
asynesia, asynesis
Lack of easy comprehension and practical intelligence. [G. a- priv. + synesis, union, understanding]
asystematic
Not systematic; not relating to one system or set of organs.
asystole
Absence of contractions of the heart. SYN: asystolia, cardiac standstill. [G. a- priv, + systole, a contracting]
asystolia
SYN: asystole.
asystolic
1. Relating to asystole. 2. Not systolic.
AT
Abbreviation for the adenine-thymine hydrogen-bonded base pair observed in double-stranded polynucleotides.
At
Symbol for astatine.
AT (in DNA)
AT stands for adenine and thymine, a base pair in DNA. The other base pair in DNA is GC (guanine and cytosine).
at. wt.
Abbreviation for atomic weight.
ata
Abbreviation for atmosphere absolute.
atabrine hydrochloride
SYN: quinacrine hydrochloride.
atactilia
Loss of the sense of touch. [G. a- priv. + L. tactilis, relating to touch, fr. tango, pp. tactus, to touch]
ataractic
1. Having a calming or tranquilizing effect. 2. A tranquilizer. SYN: ataraxic. [G. ataraktos, calm]
ataraxia
Calmness and peace of mind; tranquility. [G. a- priv. + taraktos, disturbed, + -ia]
ataraxic
SYN: ataractic.
atavism
The appearance in an individual of characteristics presumed to have been present in some remote ancestor; reversion to an earlier biologic type, a throwback. [L. atavus, a ...
atavistic
Relating to atavism.
Ataxia
Wobbliness. Ataxia is incoordination and unsteadiness due to the brain’s failure to regulate the body’s posture and regulate the strength and direction of limb ...
ataxia-telangiectasia
See ataxia telangiectasia.
ataxiadynamia
Muscular weakness combined with incoordination.
ataxiagram
The recording made by an ataxiagraph.
ataxiagraph
An instrument for measuring the degree and direction of the swaying of the body and head in static ataxia, with the individual's eyes closed. SYN: ataxiameter.
ataxiameter
SYN: ataxiagraph.
ataxiaphasia
Inability to form connected sentences, although single words may perhaps be used intelligibly. [G. a- priv. + taxis, order, + phasis, an affirmation, speech]
ataxic
Relating to, marked by, or suffering from ataxia.
ataxiophobia
Morbid dread of disorder or untidiness. [G. a- priv. + taxis, order, + phobos, fear]
ataxy
SYN: ataxia.
ATCC (American Type Culture Collection)
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 ...
atelectasis
Decreased or absent air in the entire or part of a lung, with resulting loss of lung volume. Loss of lung volume itself. SEE ALSO: pulmonary collapse. [G. ateles, incomplete, + ...
Atelectasis, primary
Failure of full expansion of the lung at birth.
Atelectasis, secondary
Partial or complete collapse of a previously expanded lung. Secondary atelectasis may occur in a variety of situations including sometimes after chest surgery.
atelectatic
Relating to atelectasis.
atelia
SYN: ateliosis.
ateliosis
Incomplete development of the body or any of its parts, as in infantilism and dwarfism. SYN: atelia. [G. ateles, incomplete, + -osis, condition]
ateliotic
Marked by ateliosis.
atelopidtoxin
A potent poison from the skin of the golden arrow frog (Atelopus zeteki) of Central and South America.
atenolol
A relatively cardioselective β-adrenergic blocking agent used primarily in the treatment of angina pectoris and hypertension; it possesses lower lipid solubility than other ...
Athelia
Absence of the nipple. Athelia is a rare condition but it is common in certain conditions. Athelia tends to occurs on one side (unilaterally) in children with the Poland ...
Atherectomy
A procedure for opening up an artery by removing the plaque (atheroma) produced by the build-up of cholesterol and other fatty substances in the inner lining of the artery from ...
athermancy
Impermeability to heat. [G. athermantos, not heated, fr. a- priv. + thermaino, to heat, fr. therme, heat]
athermanous
Absorbing radiant heat; not permeable to heat rays.
athermosystaltic
Not contracted or constricted by ordinary variations of temperature; said of certain tissues. [G. a- priv. + thermos, hot, + systaltikos, constringent]
athero-
Gruel-like, soft, pasty materials; atheroma, atheromatous. [G. athere, gruel, porridge]
atheroembolism
Cholesterol embolism, with or without calcific matter, originating from an atheroma of the aorta or other diseased artery.
atherogenesis
Formation of atheroma, important in the pathogenesis of arteriosclerosis.
atherogenic
Having the capacity to initiate, increase, or accelerate the process of atherogenesis.
atheroma
The lipid deposits in the intima of arteries, producing a yellow swelling on the endothelial surface; a characteristic of atherosclerosis. SYN: atherosis. [G. athere, gruel, + ...
atheromatous
Relating to or affected by atheroma.
atherosclerosis
Arteriosclerosis characterized by irregularly distributed lipid deposits in the intima of large and medium-sized arteries, causing narrowing of arterial lumens and proceeding ...
atherosclerotic
Relating to or characterized by atherosclerosis.
atherosis
SYN: atheroma.
atherothrombosis
Thrombus formation in an atheromatous vessel.
atherothrombotic
Denoting, characteristic of, or caused by atherothrombosis.
athetoid
Resembling athetosis.
athetosic, athetotic
Pertaining to, or marked by, athetosis.
Athetosis
Involuntary writhing movements particularly of the arms and hands. * * * A condition in which there is a constant succession of slow, writhing, involuntary movements of flexion, ...
Athlete foot
A skin infection caused by a fungus called Trichophyton which can thrive and infect the upper layer of the skin when the feet (or other areas of the body) remain moist, warm, and ...
aThr
Abbreviation for allothreonines. See allothreonines.
athrepsia, athrepsy
1. Obsolete term for marasmus. 2. As used by Ehrlich, immunity to transplanted neoplastic cells due to a lack of nourishment in the sense of a deficiency of supposed substances ...
athrocytosis
The capacity of cells to absorb and retain electronegative colloids, as shown by macrophages and at the apical surface of proximal convoluted tubule cells of the kidney. [G. ...
athrombia
A hereditary bleeding disorder characterized by prolonged bleeding time, decreased platelet adhesion and aggregation but normal plasma clotting and clot retraction, normal ...
athymia
1. Absence of affect or emotivity; morbid impassivity. 2. Congenital absence of the thymus gland, often with associated immunodeficiency. SYN: athymism. [G. a- priv. + thymos, ...
athymism
SYN: athymia (2).
athyrea
1. SYN: hypothyroidism. 2. SYN: athyroidism.
athyroidism
Congenital absence of the thyroid gland or suppression or absence of its hormonal secretion. See hypothyroidism. SYN: athyrea (2), athyrosis.
athyrosis
SYN: athyroidism.
athyrotic
Relating to athyroidism.
ATL
Abbreviation for adult T-cell leukemia or adult T-cell lymphoma.
atlantad
In a direction toward the atlas.
atlantal
Relating to the atlas. SYN: atloid.
atlanto-, atlo-
The atlas (the vertebra that supports the skull). [G. Atlas, Atlantos, Atlas, the mythical Titan who supported the dome of the sky on his shoulders]
atlanto-occipital
Relating to the atlas and the occipital bone. SYN: atlo- occipital.
atlanto-odontoid
Relating to the atlas and the dens of the axis.
Atlantoaxial
Pertaining to the first and second cervical vertebrae which meet at a joint called the atlantoaxial joint. The uppermost cervical vertebra (the atlas) rotates about the ...
atlantodidymus
Conjoined twins with two heads on one neck and a single body. SYN: atlodidymus. [atlanto- + G. didymos, twin]
atlantoepistrophic
SYN: atlantoaxial.
atlas
First cervical vertebra, articulating with the occipital bone and rotating around the dens of the axis. SYN: vertebra C1, first cervical vertebra. [G. A., in Greek mythology a ...
atlo-
See atlanto-.
atlo-occipital
SYN: atlanto- occipital.
atloaxoid
SYN: atlantoaxial.
atlodidymus
SYN: atlantodidymus.
atloid
SYN: atlantal.
atm
Symbol for standard atmosphere.
atmo-
Prefix denoting steam or vapor; or derived by action of steam or vapor. [G. atmos, steam, vapor]
atmolysis
Separation of mixed gases by passing them through a porous diaphragm, the lighter gases diffusing through at a faster rate. [ atmo- + G. lysis, dissolution]
atmometer
An instrument for measuring the rate of evaporation. [ atmo- + G. metron, measure]
atmos
Obsolete abbreviation for a unit of pressure; replaced by atm. [abbreviation of atmosphere]
atmosphere
1. Any gas surrounding a given body; a gaseous medium. 2. A unit of air pressure equal to 101.325 kPa. SEE ALSO: standard a., torr. [ atmo- + G. sphaira, sphere] - a. absolute ...
atmospherization
Conversion of venous into arterial blood.
Atmungsferment
1. A system of cytochromes and their oxidases that participate in respiratory processes. 2. Often, specifically, cytochrome oxidase. SYN: Warburg respiratory enzyme. [Ger.]
Atom
The smallest part of any material that cannot be broken up by chemical means. Each atom has a center (the nucleus) which contains protons and neutrons. Electrons orbit around the ...
atomic
Relating to an atom.
atomism
The approach to the study of a psychological phenomenon through analysis of the elementary parts of which it is assumed to be composed. Cf.:holism.
atomistic
Pertaining to atomism or a. psychology.
atomization
Spray production; reduction of a fluid to small droplets.
atomizer
A device used to reduce liquid medication to fine particles in the form of a spray or aerosol; useful in delivering medication to the lungs, nose, and throat. SEE ALSO: ...
atonia
SYN: atony. [G. languor]
Atonia, REM sleep
A frightening form of paralysis that occurs when a person suddenly finds himself or herself unable to move for a few minutes, most often upon falling asleep or waking up. Commonly ...
atonic
Relaxed; without normal tone or tension.
atonicity
SYN: atony.
atony
Relaxation, flaccidity, or lack of tone or tension. SYN: atonia, atonicity. [G. atonia, languor] - postpartum a. a. of the uterine walls after childbirth. SYN: ...
atopen
An old term to denote the excitant causing any form of atopy.
Atopic
Prone to allergies or characterized by allergy. * * * 1. Relating to or marked by atopy. 2. Allergic. [G. atopos, out of place; strange]
Atopobium
An obligatorily anaerobic genus of Gram-positive, non–spore-bearing bacteria that appear as cocci and coccobacilli, sometimes in short chains. The type species is A. parvulus, a ...
atopognosia, atopognosis
Sensory inattention; inability to locate a sensation properly. Usually caused by a contralateral parietal lobe lesion. [G. a- priv. + topos, place, + gnosis, knowledge]
atopy
A genetically determined state of hypersensitivity to environmental allergens. Type I allergic reaction is associated with the IgE antibody and a group of diseases, principally ...
atoxic
Not toxic.
ATP
Abbreviation for adenosine 5′-triphosphate.
ATP (acute thrombocytopenic purpura)
Sudden onset of low blood platelet levels with bleeding into the skin and elsewhere. ATP is due to many causes. It may, for example, constitute a potentially serious complication ...
ATP (adenosine triphosphate)
A compound of critical importance in the storage of energy within cells in the body and in the synthesis (the making) of RNA. ATP is a nucleotide (a building block of a nucleic ...
ATP citrate lyase
See ATP citrate (pro-3S)-lyase.
ATP sulfurylase
SYN: sulfate adenylyltransferase.
ATP-diphosphatase
SYN: apyrase.
ATPase
Abbreviation for adenosine triphosphatase.
ATPD
Symbol indicating that a gas volume has been expressed as if it had been dried at the ambient temperature and pressure.
ATPS
Symbol indicating that a gas volume has been expressed as if it were saturated with water vapor at the ambient temperature and barometric pressure; the condition of an expired ...
atractosylidic acid
SYN: atractyligenin.
atractylic acid
A highly poisonous steroid glycoside from Atractylis gummifera L. (Compositae), having a strychnine-like action that produces convulsions of a hypoglycemic nature; the aglycon, ...
atractyligenin
The steroid aglycon and toxic principle of atractylic acid. SYN: atractosylidic acid, atractylin.
atractylin
SYN: atractyligenin.
atracurium besylate
A nondepolarizing neuromuscular relaxant of intermediate duration of action; used as an adjunct to general anesthesia; a curare-like agent.
atrepsy
SYN: athrepsia (2). [G. a- priv. + trepho, to nourish]
Atresia
Absence of a normal opening or failure of a structure to be tubular. Atresia can affect many structures in the body, including: {{}}Anal atresia — congenital absence of a hole ...
Atresia, anal
Congenital absence of an opening at the bottom end of the intestinal tract. Also called imperforate anus. Occurs in about 1 in 5,000 births. It is corrected by surgery. Atresia ...
Atresia, aortic
Congenital absence of the normal valvular opening from the left ventricle of the heart into the aorta. " Atresia" here refers to the absence of a normal opening.
Atresia, biliary
Congenital absence or closure of the major bile ducts, the ducts that drain bile from the liver. Biliary atresia results in a progressive inflammatory process which may lead to ...
atresic
SYN: atretic.
atretic
Relating to atresia. SYN: atresic, imperforate.
atreto-
Lack of an opening. [G. atretos, imperforate fr. a-, not + tretos, perforated, fr. tetraino, titremi, to bore through, to pierce.]
atretoblepharia
SYN: symblepharon. [ atreto- + G. blepharon, eyelid]
atretocystia
Obsolete term for congenital or acquired absence of an opening of a bladder. [ atreto- + G. kystis, bladder]
atretogastria
Congenital absence of an opening of the stomach. [ atreto- + G. gaster, stomach]
atretopsia
SYN: atresia iridis. [ atreto- + G. ops, eye]
Atria
The plural of atrium. The atria are the two smaller chambers of the heart. Each atrium consists of an open space with recessed walls. The right atrium receives deoxygenated blood ...
atrial
Relating to an atrium.
Atrial flutter
Well-organized but overly rapid contractions of the atrium of the heart (usually at a rate of 250-350 contractions per minute). Flutter refers to a rapid vibration or ...
Atrial septal defect (ASD)
A hole in the septum, the wall, between the atria, the upper chambers of the heart. Commonly called an ASD. ASDs constitute a major class of heart formation abnormalities present ...
Atrial septum
The wall between the two upper chambers (the right and left atrium) of the heart.
atrichia
Absence of hair, congenital or acquired. SYN: atrichosis. [G. a- priv. + thrix (trich-), hair]
atrichosis
SYN: atrichia.
atrio-
The atrium; atrial. [L. atrium, an entrance hall]
atriomegaly
Enlargement of the atrium. [ atrio- + G. megas, great]

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