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Слова на букву (2,4-ance (2629)

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4-carboxyglutamic acid
A carboxylated form of glutamic acid found in certain proteins ( E.G., prothrombin, factors VII, IX, and X, osteocalcin). Its synthesis is vitamin K-dependent.
4-homosulfanilamide
SYN: mafenide.
4-hydroxybutyrate
SYN: γ-hydroxybutyrate.
4-hydroxybutyric aciduria
Elevated levels of 4-hydroxybutyrate in the urine. An inherited disorder that can lead to hypotonia and mental retardation.
4-hydroxyproline
4-Hydroxy-2-pyrrolidinecarboxylic acid; the trans-l-isomer is a pyrrolidine found among the hydrolysis products of collagen; not found in proteins other than those of connective ...
4-imidazolone-5-propionate
An intermediate in histidine degradation; seen in reduced levels in urocanic aciduria.
4-methoxybenzoic acid
SYN: anisic acid.
4-oxoproline reductase
SYN: 4-hydroxyproline oxidase.
4-pyridoxic acid
The principal product of the metabolism of pyridoxal (–COOH replaces –CHO at position 4), appearing in the urine.
4-thiouracil
Uracil with S replacing O in position 4, isomeric with 2-thiouracil; a rare component of transfer RNAs.
4-α-d-glucanotransferase
Dextrin transglycosylase or glycosyltransferase; a 4-glycosyltransferase converting maltodextrins into amylose and glucose by transferring parts of 1,4-glucan chains to new ...
40K
Symbol for potassium-40.
42K
Symbol for potassium-42.
43K
Symbol for potassium-43.
45Ca
Symbol for calcium-45.
47Ca
Symbol for calcium-47.
4Hyp
Abbreviation for 4-hydroxyproline.
4′-phosphopantetheine
The prosthetic group of the acyl carrier protein in the fatty acid synthase complex. SYN: pantetheine 4′-phosphate.
5,5-diphenylhydantoin
SYN: phenytoin.
5,6,7,8-tetrahydrofolate dehydrogenase
SYN: dihydrofolate reductase.
5,6-dimethylbenzimidazole
A structural moiety found in one of the cobalamins.
5-aminoacridine hydrochloride, 9-aminoacridine hydrochloride
SYN: acridine yellow, aminacrine hydrochloride.
5-aminoimidazole ribose 5′-phosphate
An intermediate in the biosynthesis of purines. SYN: 5-aminoimidazole ribotide.
5-aminoimidazole ribotide
SYN: 5-aminoimidazole ribose 5′-phosphate.
5-aminoimidazole-4-N-succinocarboxamide ribonucleotide
An intermediate in purine biosynthesis.
5-bromouracil
Synthetic analog ( antimetabolite) of thymine, in which a bromine atom takes the place of the methyl group in thymine; a mutagen.
5-formamidoimidazole-4-carboximide ribotide
An intermediate in purine biosynthesis.
5-HT
Abbreviation for 5-hydroxytryptamine.
5-hydroxylysine
A hydroxylated amino acid found in certain collagens. The decreased ability to form h. is associated with Ehlers-Danlos syndrome type VI. SYN: δ-hydroxylysine.
5-hydroxytryptamine
SYN: serotonin.
5-methoxyindole-3-acetate
An intermediate of tryptophan and serotonin degradation; excreted as conjugates.
5-methoxytryptamine
An intermediate in the degradation of l-tryptophan and serotonin.
5-methylcytosine
A minor base that is present in both bacterial and human DNA.
5-methylresorcinol
SYN: orcinol.
5-oxoprolinase
An enzyme that catalyzes the ATP-dependent hydrolysis of l-5-oxoproline (ATP + l-5-oxoproline → ADP + orthophosphate + l-glutamate); a deficiency of this enzyme will result in ...
5-oxoproline
A keto derivative of proline that is formed nonenzymatically from glutamate, glutamine, and γ-glutamylated peptides; it is also produced by the action of ...
5-oxoprolinuria
Elevated levels of 5-oxoproline in the urine.
5-phospho-α-d-ribosyl-1-pyrophosphate
5-Phosphoribosyl 1-diphosphate; d-ribose carrying a phosphate group on ribose carbon-5 and a pyrophosphate group on ribose carbon-1; an intermediate in the formation of the ...
5-phosphoribose 1-diphosphate
SYN: 5-phospho-α-d-ribosyl-1-pyrophosphate.
5-phosphoribosylamine
An intermediate in purine biosynthesis.
5-trifluoromethyldeoxyuridine
A pyrimidine analog used topically in the treatment of herpes simplex keratitis.
52Fe
Symbol for iron-52.
55Fe
Symbol for iron-55.
57Co
Symbol for cobalt-57.
58Co
Symbol for cobalt-58.
59Fe
Symbol for iron-59.
5Hyl
Abbreviation for 5-hydroxylysine.
5′-deoxyadenosylcobalamin
An active coenzyme form of vitamin B12; required in the conversion of methylmalonyl-CoA to succinyl-CoA. A deficiency of d. will result in methylmalonic acidemia.
6-aminopenicillanic acid
An important precursor in the synthesis of penicillin derivatives. By itself, it has no antibiotic activity.For structure, see under penicillin in which R = H. SYN: penicin.
6-aminopurine
SYN: adenine.
6-APS
Abbreviation for 6-aminopenicillanic acid.
6-azathymine
Thymine with N for C in position 6; an antimetabolite of thymine.
6-azauridine
Uridine with N for C in position 6; a triazine analogue of uridine and an antimetabolite with selectivity for human neoplastic leukocytes; produces partial remissions in ...
6-hydroxypurine
SYN: hypoxanthine.
6-mercaptopurine
An analogue of hypoxanthine and of adenine; an antineoplastic agent.
6-phospho-d-glucono-δ-lactone
An intermediate in the pentose phosphate pathway that is synthesized from d-glucose 6-phosphate.
6-phosphofructokinase
Phosphofructokinase I; an enzyme that catalyzes the phosphorylation of d-fructose 6-phosphate by ATP (or other NTP) to fructose 1,6-bisphosphate and ADP (or other NDP); this ...
6-phosphogluconolactonase
A hydrolase that catalyzes the hydrolysis of 6-phospho-d-glucono δ-lactone to 6-phospho-d-gluconate; this enzyme is a part of the pentose phosphate shunt.
6-phytase
Phytate 6-phosphate; an enzyme-hydrolyzing phytic acid, removing the 6-phosphoric group, thus producing orthophosphate and 1l-myo-1,2,3,4,5-pentakisphosphate.
6-PTS
Abbreviation for 6-pyruvoyltetrahydropterin synthase.
6-pyruvoyltetrahydropterin synthase
An enzyme that catalyzes a step in the synthesis of tetrahydrobiopterin; a deficiency of this enzyme will result in one form of hyperphenylalaninemia.
6-sulfoquinovosyl diacylglycerol
Quinovose containing an SO3H on C-6 and a doubly substituted glycerol on C-1; the sulfolipid occurring in all photosynthetic tissues.
60Co
Symbol for cobalt-60.
64Cu
Symbol for copper-64.
65Zn
Abbreviation for zinc-65.
67Cu
Symbol for copper-67.
67Ga
Symbol for gallium-67.
68Ga
Symbol for gallium-68.
7,8-dihydrofolic acid
Intermediate between folic acid and 5,6,7,8-tetrahydrofolic acid, oxidation of the latter requiring NADP+ and dehydrofolate reductase.
7-dehydrocholesterol
A zoosterol in skin and other animal tissues that upon activation by ultraviolet light becomes antirachitic and is then referred to as cholecalciferol (vitamin D3). SYN: ...
7α-hydroxycholesterol
First intermediate in the conversion of cholesterol to the bile acids; formed in the principal rate-limiting step of bile acid biosynthesis.
8-azaguanine
Guanine with N for C in position 8; a guanine antagonist that has been used in the treatment of acute leukemia. SYN: guanazolo, triazologuanine.
8-hydroxyquinoline
A fungistat and chelating agent. SYN: quinolinol.
8-lysine vasopressin
SYN: lypressin.
85Sr
Abbreviation for strontium-85.
87mSr
Abbreviation for strontium-87m.
89Sr
Symbol for strontium-89.
9,10-anthraquinone
1. The basis of natural cathartic principles in plants; used as a reagent. 2. A compound containing a. (1) as a part of its structure; this class of compound comprises the ...
9-aminoacridine
One of the acridine group of antiseptics (flavins); highly fluorescent in solution; used topically as an antiseptic.
9-azafluorene
SYN: carbazole.
9-eicosenoic acid
SYN: gadoleic acid.
9-β-ribofuranosylpurine
SYN: nebularine.
90Sr
Symbol for strontium-90.
99Mo
Abbreviation for molybdenum-99.
99mTc
Symbol for technetium-99m.
99mTc-dimercaptosuccinic acid
Radiopharmaceutical that localizes to the renal cortex for imaging to determine scarring or pyelonephritis.
99mTc-DMSA
Abbreviation for 99mTc-dimercaptosuccinic acid.
99mTc-glucoheptanate
Radiopharmaceutical possessing renal cortical-localizing and excretion-handling properties; may be used either for renal cortical imaging to determine scarring or for renal ...
99Tc
Symbol for technetium-99.
9H-fluorene
Parent compound of 2-acetylaminofluorene; occurs in coal tar.
9α-fluorocortisol
SYN: fludrocortisone acetate.
9α-fluorohydrocortisone acetate
SYN: fludrocortisone acetate.
A
1. Abbreviation for ampere; adenine; alanine. 2. As a subscript, refers to alveolar gas. 3. Symbol (usually capitalized italic) for absorbance. 4. Symbol for adenosine or ...
Å
Symbol for angstrom.
a
1. Abbreviation for total acidity; ante; area; asymmetric; auris; artery; arteria [TA]. 2. Symbol for atto-. 3. As a subscript, refers to systemic arterial blood. Symbol for ...
A (adenine)
In genetics, A stands for adenine, one member of the A-T (adenine-thymine) base pair in DNA. The other base pair in DNA is G-C (guanine-cytosine). Each base pair forms a "rung ...
A- (prefix)
Prefix very much employed in medicine and all of the health sciences, indicating “not, without, -less” as, for example, in alexia (not read), aphagia (not eat), aphonia ...
a-, an-
Not, without, -less; equivalent to L. in- and E. un-. [G. not, un-, usually an- before a vowel]
A-mode
In diagnostic ultrasound, a one-dimensional presentation of a reflected sound wave in which echo amplitude (A) is displayed along the vertical axis and echo delay ( depth) along ...
A-P-C
1. Abbreviation for adenoidal-pharyngeal-conjunctival. 2. Antigen-presenting cell.
A-V shunt
Abbreviation for arteriovenous shunt.
a.c.
Abbreviation for L. ante cibum, before a meal or ante cibos, before meals.
a.c. (on prescription)
Abbreviation meaning before meals; from the Latin " ante cibum", before meals. This is one of a number of hallowed abbreviations of Latin terms that have traditionally been used ...
A.D.
Abbreviation for auris dexter [L.], right ear.
A.S.
Abbreviation for auris sinistra [L.], left ear.
A.U.
Abbreviation for auris uterque [L.], each ear or both ears.
aa
Abbreviation for arteries [TA], arteriae [TA].
AA, aa
Abbreviation for amino acid; aminoacyl.
aa.
Abbreviation for G. ana, of each; used in prescription writing following the name of two or more ingredients.
AAA
Abbreviation for abdominal aortic aneurysm; commonly, procedure for surgical correction of an A..
AAA (abdominal aortic aneurysm)
Many Americans know that the AAA ("triple A") is short for the American Automobile Association. Fewer may be aware that it is also the acronym for the American ...
AAAS (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 ...
Aad
Abbreviation for α-aminoadipic acid.
AAD (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 ...
AAF
Abbreviation for 2-acetylaminofluorene; 2-acetamidofluorene.
AAFP (American Academy of Family Physicians)
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 ...
Aagenaes
O., Norwegian physician. See A. syndrome.
AAMC
The Association of American Medical Colleges (AAMC) is a nonprofit association of the 125 accredited U.S. medical schools; the 16 accredited Canadian medical schools; more than ...
AAO (ambiguity)
The abbreviation AAO provides an instance of ambiguity or, at least some confusion, since it stands for multiple health-related organizations including the American Association ...
AAOS (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 ...
AAP
Although the abbreviation AAP stands for multiple health-related organizations (including the American Academy of Pedodontics, the American Academy of Periodontology, and the ...
AAR
Abbreviation for antigen-antibody reaction.
Aaron
Charles D., U.S. physician, 1866–1951. See A. sign.
Aarskog
Dagfinn J., Norwegian pediatrician, *1928. See A.- Scott syndrome.
Aarskog-Scott syndrome
This disorder is characterized by multiple birth defects including wide spaced eyes (ocular hypertelorism), front-facing (anteverted) nostrils, a broad upper lip, a malformed ...
Aase-Smith syndrome I
A syndrome of congenital malformations (birth defects) characterized by hydrocephalus, cleft palate, and severe arthrogryposis (joint contractures). Other anomalies may include ...
Aase-Smith syndrome II
A genetic disorder that may be detected during early infancy and is characterized by the presence of three bones (phalanges) within the thumbs (triphalangeal thumbs) rather than ...
AASH
Abbreviation for adrenal androgen-stimulating hormone.
AAV
Abbreviation for adeno- associated virus.
Ab
Abbreviation for antibody.
Ab-
Prefix from the Latin meaning “from, away from, off” as in abduction (movement of a limb away from the midline of the body), ablate (carry or cut away), abnormal (away from ...
ab-, abs-
1. From, away from, off. 2. Prefix applied to electrical units in the CGS-electromagnetic system to distinguish them from units in the CGS-electrostatic system (prefix stat-) ...
Abadie
Joseph Louis Irénée Jean, French neurosurgeon, 1873–1946. See A. sign of tabes dorsalis.
abampere
Electromagnetic unit of current equal to 10 absolute amperes; a current that exerts a force of 2π dynes on a unit magnetic pole at the center of a circle of wire 1 cm in radius.
abapical
Opposite the apex.
abarognosis
Loss of ability to appreciate the weight of objects held in the hand, or to differentiate objects of different weights. When the primary senses are intact, caused by a lesion of ...
abasia
Inability to walk. See gait. [G. a- priv. + basis, step] - atactic a., ataxic a. difficulty in walking due to ataxia of the legs.
abasia-astasia
See astasia- abasia.
abasic
1. Affected by, or associated with, abasia. 2. Refers to loss of pyrimidine sites in DNA. SYN: abatic.
abatement
1. A diminution or easing. 2. Reduction, ultimately elimination, of public health nuisances such as smoke, loud noise. [abate, fr. M.E. abaten, fr. O.Fr. abattre, to beat down, ...
abatic
SYN: abasic.
abaxial, abaxile
1. Lying outside the axis of any body or part. 2. Situated at the opposite extremity of the axis of a part.
Abbe
Robert W., U.S. surgeon, 1851–1928. See A. flap.
Abbé
Ernst K., German physicist, 1840–1905. See Abbé condenser.
Abbott
Alexander C., U.S. bacteriologist, 1860–1935. See A. stain for spores. W. Osler, U.S. physician, 1902–1943. See A. tube, Miller-A. tube.
Abbott artery
See under artery.
Abbreviations, prescription
A prescription, as is well known, is a physician's order for the preparation and administration of a drug or device for a patient. What may be less well known is that a ...
abciximab
Monoclonal antibody with antithrombotic properties used for the prevention and treatment of arterial occlusive disorders.
abcoulomb
A unit of electrical charge equal to 10 coulombs. The charge that passes over a given surface in 1 sec if a current of 1 abampere is flowing across the surface. [ab + coulomb]
abdomen
The part of the trunk that lies between the thorax and the pelvis. The a. does not include the vertebral region posteriorly but is considered by some anatomists to include the ...
Abdominal
: Relating to the abdomen, the belly, that part of the body that contains all of the structures between the chest and the pelvis. The abdomen is separated anatomically from the ...
Abdominal aortic aneurysm (AAA)
A ballooning or widening of the main artery (the aorta) as it courses down through the abdomen. At the point of the aneurysm, the aneurysm usually measures 3 cm or more in ...
Abdominal cavity
The cavity within the abdomen, the space between the abdominal wall and the spine. The abdominal cavity is hardly an empty space. It contains a number of crucial organs including ...
Abdominal guarding
Tensing of the abdominal wall muscles to guard inflamed organs within the abdomen from the pain of pressure upon them. The tensing is detected when the abdomen wall is pressed. ...
Abdominal hysterectomy
Surgical removal of the uterus (a hysterectomy) done through an incision made in the abdominal wall. As opposed to a vaginal hysterectomy in which the incision is made within the
Abdominal muscle deficiency syndrome
Partial or complete absence of the abdominal muscles so that the outlines of the intestines are visible through the thin, lax, protruding abdominal wall. Also called the " prune ...
abdomino-, abdomin-
The abdomen, abdominal. [L. abdomen, abdominis]
abdominocentesis
Paracentesis of the abdomen. [abdomino- + G. kentesis, puncture]
abdominocyesis
1. SYN: abdominal pregnancy. 2. SYN: secondary abdominal pregnancy. [abdomino- + G. kyesis, pregnancy]
abdominocystic
SYN: abdominovesical. [abdomino- + G. kystis, bladder]
abdominogenital
Relating to the abdomen and the genital organs.
abdominohysterectomy
SYN: abdominal hysterectomy.
abdominohysterotomy
SYN: abdominal hysterotomy.
abdominopelvic
Relating to the abdomen and pelvis, especially the combined abdominal and pelvic cavities.
abdominoperineal
Relating to both abdomen and perineum, as in a. resection of the rectum.
abdominoplasty
An operation performed on the abdominal wall for cosmetic purposes. [abdomino- + G. plastos, formed]
abdominoscopy
SYN: laparoscopy. [abdomino- + G. skopeo, to examine]
abdominoscrotal
Relating to the abdomen and the scrotum.
abdominothoracic
Relating to both abdomen and thorax.
abdominovaginal
Relating to both abdomen and vagina.
abdominovesical
Relating to the abdomen and urinary bladder, or to the abdomen and gallbladder. SYN: abdominocystic.
abduce
SYN: abduct.
abducens
SYN: abducent. [L.] - a. oculi SYN: lateral rectus (muscle).
abducent
1. Abducting; drawing away, especially away from the median plane. 2. SYN: a. nerve [CN VI]. SYN: abducens. [L. abducens]
Abducent nerve
A small motor nerve that has one task: to supply a muscle called the lateral rectus muscle that moves the eye outward. Paralysis of the abducent nerve causes inward turning of ...
abduct
To move away from the median plane. SYN: abduce.
Abduction
No less an authority than Merriam Webster's Collegiate Dictionary defines "abduction" as (1) the action of abducting: the condition of being abducted (and) (2) the unlawful ...
abductor
SYN: a. (muscle).
Abductor muscle
Any muscle used to pull a body part away from the midline of the body. For example, the abductor muscles of the legs spread the legs away from the midline and away from one ...
Abegg
Richard, Danish chemist, 1869–1910. See A. rule.
Abell-Kendall method
See under method.
Abelson
Herbert T., U.S. pediatrician, *1941. See A. murine leukemia virus.
abembryonic
The area of the blastocyst opposite the region where the embryo is formed. [L. ab, from, + embryonic]
abenteric
A rarely used term meaning away from the intestine, said of a morbid process occurring elsewhere that would normally occur in the intestine. [L. ab, from, + G. enteron, intestine]
Abernethy
John, British surgeon and anatomist, 1764–1831. See A. fascia.
aberrant
1. Differing from the normal; in botany or zoology, said of certain atypical individuals in a species. 2. Wandering off; said of certain ducts, vessels, or nerves deviating ...
Aberration
(1) A deviation or irregularity. For example, a chromosome aberration is a deviation from the normal chromosome number or the normal chromosome structure. In this sense, ...
aberrometer
An instrument for measuring optical aberration or any error in experimentation. [L. aberratio, aberration, + G. metron, measure]
abetalipoproteinemia
A disorder characterized by an absence of low-density beta-lipoprotein, presence of acanthocytes in blood, retinal pigmentary degeneration, malabsorption, engorgement of upper ...
abeyance
A state of temporary abolition of function. [fr. O. Fr.]
abfarad
Electromagnetic unit of capacity equal to 109 farads.
ABG
Abbreviation for arterial blood gas. See blood gases, under gas.
abhenry
Electromagnetic unit of inductance equal to 10−9 henry.
ability
The physical, mental, or legal competence to function. [L. habilitas, aptitude]
abiotic
1. Incompatible with life. 2. Without life.
Abiotrophy
Loss of function or degeneration for reasons unknown. For example, cerebellar abiotrophy may affect coordination while cone-rod abiotrophy may cause blindness at birth. * * * An ...
abirritation
Obsolete term for diminution or abolition of irritability in a part. [L. ab, from, + irrito, pp. -atus, to irritate]
abl
An oncogene found in the Abelson strain of mouse leukemia virus and involved in the Philadelphia chromosome translocation in chronic granulocytic leukemia.
ablastemic
Not germinal or blastemic. [G. a- priv. + blastema, sprout]
ablastin
An antibody that seems to inhibit reproduction of trypanosomes; found in rats infected with Trypanosoma lewisi. [G. a- priv. + blastos, germ]
Ablate
To remove. A tumor may be ablated. To ablate the thyroid gland is to remove it. The word “ablation” came from the Latin “ablatum” meaning to carry away. In 1671 the ...
Ablation
Removal or excision. Ablation is usually carried out surgically. For example, surgical removal of the thyroid gland (a total thyroidectomy) is ablation of the thyroid. The word ...
Ablation, endometrial
Removal of the lining of the womb. Removing the uterine lining decreases menstrual flow or stops it completely. Ablation means removal or excision, usually surgically. The ...
ablepharia
Congenital absence of the eyelids. SEE ALSO: cryptophthalmus, microblepharon. [G. a- priv. + blepharon, eyelid]
abluent
1. Cleansing. 2. Anything with cleansing properties. [L. abluens, fr. ab-luo, to wash off]
ablution
An act of washing or bathing. [L. ablutio, washing off, cleansing]
abnerval
Away from a nerve; denoting specifically a current of electricity passing through a muscular fiber in a direction away from the point of entrance of the nerve fiber. SYN: ...
abneural
1. SYN: abnerval. 2. Away from the neural axis. [L. ab, away from, + G. neuron, nerve]
abnormal
Not normal; differing in any way from the usual state, structure, condition, or rule.
abnormality
1. The state or quality of being abnormal. 2. An anomaly, deformity, malformation, impairment, or dysfunction. - figure-of-8 a. a radiographic appearance associated with total ...
ABO blood group
See Blood Groups appendix.
abohm
Electromagnetic unit of resistance equal to 10−9 ohm.
aborad, aboral
In a direction away from the mouth; opposite of orad. [L. ab, from, + os (or-), mouth]
abort
1. To give birth to an embryo or fetus before it is viable. SEE ALSO: miscarry. 2. To remove products of conception prematurely to destroy the offspring. 3. To arrest a ...
aborticide
SYN: abortifacient (1). [L. flabboriri, to miscarry + cadere, to kill.]
abortient
SYN: abortifacient (1).
abortifacient
1. Producing abortion. SYN: aborticide, abortient, abortigenic, abortive (3). 2. An agent that produces abortion. [L. abortus, abortion, + facio, to make]
abortigenic
SYN: abortifacient (1). [L. abortus, abortion, + genesis, production]
Abortion
In medicine, an abortion is the premature exit of the products of conception (the fetus, fetal membranes, and placenta) from the uterus. It is the loss of a pregnancy and does ...
Abortion, habitual
The miscarriage of 3 or more consecutive pregnancies. The abortion of 3 or more miscarriages (spontaneous abortions) with no intervening pregnancies is also termed recurrent ...
Abortion, multiple
Two or more miscarriages (spontaneous abortions) by a woman. Couples who have had multiple abortions have about a 5% chance that one member of the couple is carrying a chromosome ...
Abortion, recurrent
The occurrence of 3 or more miscarriages (which are medically termed "spontaneous abortions") with no intervening pregnancies. Recurrent abortion (or, as it is sometimes called, ...
Abortion, spontaneous
A miscarriage, that is, any pregnancy that is not viable (the fetus cannot survive) or in which the fetus is born before the 20th week of pregnancy. Spontaneous abortion ...
abortionist
One who interrupts a pregnancy.
Abortive
The word "abortive" has a number of meanings including prematurely born; fruitless or unsuccessful; imperfectly formed or developed; tending to cut short. In everyday language, ...
Abortive polio
Abortive polio is a minor illness. It accounts for 80-90% of clinically apparent cases of polio infection, chiefly in young children. It does not involve the CNS. The usual ...
abortus
Any product (or all products) of an abortion. [L.]
aboulia
SYN: abulia.
ABPA
Abbreviation for allergic bronchopulmonary aspergillosis.
ABR
Abbreviation for auditory brainstem response. See auditory brainstem response.
ABR (auditory brainstem response) test
A test for hearing and brain (neurological) functioning. ABR may be used in the evaluation of: {{}}Neurologic integrity (and hearing) in patients who are comatose, ...
abrachia
Congenital absence of arms. See amelia. [G. a- priv. + brachion, arm]
abrachiocephaly, abrachiocephalia
Congenital absence of arms and head. SYN: acephalobrachia. [G. a- priv. + brachion, arm, + kephale, head]
abrade
1. To wear away by mechanical action. 2. To scrape away part or all of the surface layer from a part. [L. ab-rado, pp. -rasus, to scrape off]
Abraham-man
Also abram-man. One of a class of beggars who once wandered over England after the dissolution of the religious houses in the 16th century, pretending lunacy for the sake of ...
Abrahams
Robert, U.S. physician, 1861–1935. See A. sign.
Abrams
Albert, U.S. physician, 1863–1924. See A. heart reflex.
abrasion
1. An excoriation, or circumscribed removal of the superficial layers of skin or mucous membrane. SYN: abraded wound. 2. A scraping away of a portion of the surface. 3. In ...
abrasive
1. Causing abrasion. 2. Any material used to produce abrasions. 3. A substance used in dentistry for abrading, grinding, or polishing.
abrasiveness
1. That property of a substance that causes surface wear by friction. 2. The quality of being able to scratch or wear away another material.
abreact
1. To show strong emotion while reliving a previous traumatic experience. 2. To discharge or release repressed emotion.
abreaction
In freudian psychoanalysis, an episode of emotional release or catharsis associated with the bringing into conscious recollection previously repressed unpleasant ...
abrin
A phytotoxin from jequirity seeds or Indian liquorice, the red seeds (Abrus precatorius); used in ophthalmology.
Abruptio (abruptio placentae)
Premature separation of the placenta from the wall of the uterus. Abruption is a potentially serious problem both for the mother and baby.
abruptio placentae
Premature detachment of a normally situated placenta.
Abruption
A sudden breaking off or away. Abruption of the placenta (abruptio placentae) is the premature separation of the placenta from the wall of the uterus, a potentially very serious ...
Abrus
A genus of leguminous plants. The root of A. precatorius, Indian liquorice, is sometimes used as a substitute for liquorice; the seeds are toxic and may cause vomiting, ...
Abs
Commonly used slang for the abdominal muscles, the muscles running up and down in the abdominal wall. The "abs" contain the rectus abdominus muscle, " rectus" meaning straight."
abs. feb.
Abbreviation for L. absente febre, when fever is absent.
Abscess
A local accumulation of pus anywhere in the body. The following are some examples of abscesses: {{}}A skin abscess is better known as a common boil; A peritonsillar abscess is a ...
Abscess, peritonsillar
A collection of pus (an abscess) behind the tonsils that pushes one of the tonsils toward the uvula (the prominent soft tissue dangling from the back of the palate in the back ...
abscissa
In a plane cartesian coordinate system, the horizontal axis (x). Cf.:ordinate. [L. ab-scindo, pp. -scissus, to cut away from]
Abscission
To remove tissue by cutting it away, as in surgery. * * * Cutting away. [L. ab-scindo, pp. -scissus, to cut away from]
absconsio
A recess, cavity, or depression; used especially in osteology to denote a bony cavity which accommodates the head of another bone. [Mod. L. fr. abs-condo, pp. -conditus or ...
abscopal
Denoting the effect that irradiation of a tissue has on remote nonirradiated tissue. [ab- + G. skopos, target, + -al]
absence
Paroxysmal attacks of impaired consciousness, occasionally accompanied by spasm or twitching of cephalic muscles, which usually can be brought on by hyperventilation; depending ...
Absence of the breast
A rare condition wherein the normal growth of the breast or nipple never takes place. They are congenitally absent. There is no sign whatsoever of the breast tissue, areola or ...
Absence of the nipple
Medically called athelia, this is a rare condition but it is common in certain conditions. Athelia tends to occurs on one side (unilaterally) in children with the Poland ...
Absence seizure
A seizure that takes the form of a staring spell. The person suddenly seems to be “absent.” An absence seizure involves a brief loss of awareness, which can be accompanied by ...
Absent eye
Also called anophthalmia, a congenital malformation (birth defect) of the globe. Anophthalmia refers, strictly speaking, to absence of the globe and ocular tissue from the ...

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