| active immunization | The production of active immunity. (05 Mar 2000) |
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| active inflammation | Any inflammation that has a fairly rapid onset, quickly becomes severe, usually manifested for only a few days, but may persist for several days or even a few weeks. Synonym: active inflammation. (05 Mar 2000) |
| active labour | Contractions resulting in progressive effacement and dilation of the cervix. (05 Mar 2000) |
| active length-tension curve | The relationship between active isometric tension and preload (rest length) for a contracting muscle. (05 Mar 2000) |
| active metal | <chemistry> Any very reactive metal, such as magnesium or sodium, most are located in the first two columns of the periodic table. (15 Jan 1998) |
| active methionine | S-(5'-deoxy-5'-adenosyl)-l-methionine;condensation product of adenosine and l-methionine involving replacement of the -OPO3H2 of adenylic acid by -S+ (CH3)CH2CH2CH(NH3+)CO 2 of methionine; a sulfonium compound bearing a methyl group that is transferred in transmethylation reactions. See: methionine adenosyltransferase. Synonym: active methionine. Acronym: SAM (05 Mar 2000) |
| active methyl | A methyl group attached to a quaternary ammonium ion or a tertiary sulfonium ion that can take part in transmethylation reactions; e.g., methyl groups in choline and in S-adenosyl-l-methionine, which are thus methyl donors. (05 Mar 2000) |
| active movement | Movement effected by the organism itself, unaided by external influences. (05 Mar 2000) |
| active mutant | A mutant with overt phenotypic expression. (05 Mar 2000) |
| active placebo | <pharmacology> Any dummy medical treatment, originally, a medicinal preparation having no specific pharmacological activity against the patients illness or complaint given solely for the psychophysiological effects of the treatment, more recently, a dummy treatment administered to the control group in a controlled clinical trial in order that the specific and non-specific effects of the experimental treatment can be distinguished i.e., the experimental treatment must produce better results than the placebo in order to be considered effective. (18 Nov 1997) |
| active principle | A constituent of a drug, usually an alkaloid or glycoside, upon the presence of which the characteristic therapeutic action of the substance largely depends. (05 Mar 2000) |
| active prophylaxis | Use of an antigenic (immunogenic) agent to actively stimulate the immunological mechanism. (05 Mar 2000) |
| active psychoanalysis | Psychoanalysis in which the analyst intervenes directly and actively in the patient's life, e.g., by making prohibitions, assigning tasks. (05 Mar 2000) |
| active pyruvate | An intermediate formed in the oxidative decarboxylation of pyruvate. Compare: pyruvate dehydrogenase (lipoamide). Synonym: alpha-lactyl-thiamin pyrophosphate. (05 Mar 2000) |
| active repressor | A repressor that combines directly with an operator gene to repress the operator and its structural genes, thus repressing protein synthesis; active repressor may be repressed by an inducer, with resulting protein synthesis; a homeostatic mechanism for regulation of inducible enzyme systems. (05 Mar 2000) |
Synonyms : Activin Receptor Like Kinases, Type I
Synonyms : Activin Receptors Type II
Synonyms : Activin, FSH-Releasing Protein, FSH Releasing Protein, Protein, FSH-Releasing
Synonyms : Activities, Daily Living, Activity, Daily Living, Care, Self (Rehabilitation), Cares, Self (Rehabilitation), Daily Living Activities, Daily Living Activity, Living Activities, Daily, Living Activity, Daily, Living, Independent, Self Cares (Rehabilitation)
Synonyms : Activity Cycle, Cycle, Activity, Cycle, Ultradian, Cycles, Activity, Cycles, Ultradian, Ultradian Cycle
| actual cautery |
the application of an agent that actually burns tissue.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| actinic retinitis |
retinitis due to exposure to actinic light rays.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| actinic reticuloid |
chronic photodermatitis with sensitivity to a broad spectrum of radiation, usually occurring in older men; it first occurs on sun-exposed areas as a scaly pruritic erythema, often spreading and leading to thick plaques, furrows, and leonine facies. Lesions are characterized histologically by a polymorphous dermal infiltrate that resembles lymphoma.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| activated sludge |
sludge from aerated sewage, consisting mainly of aerobic bacteria (eg, Sphaerotilus, Zoogloea), protozoa (eg, Opercularia, Vorticella), yeasts, and molds. Further treatment consists of anaerobic digestion. A portion serves as inoculum for a succeeding batch of screened and sedimented raw sewage.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| activation analysis |
a quantitative or qualitative determination of trace levels of atoms possessing certain types of nuclei in a sample by bombarding it with radioactivity and analyzing the emanating radiation.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| Act | (television) showing again some action (especially sports action) that has been recorded on video tape |
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| Act | the efficiency with which electromagnetic radiation produces a photochemical reaction plotted as a function of the wavelength of the radiation |
| Act | affording grounds for legal action |
| Act | a genus of Scolopacidae |
| Act | a variety of sandpiper |
| Act | common North American sandpiper |
| Act | the naval battle in which Antony and Cleopatra were defeated by Octavian's fleet under Agrippa in 31 BC |
| Act | an ancient town on a promontory in western Greece |
| Act | a thrombolytic agent (trade name Activase) that causes fibrinolysis at the site of a blood clot |
| Act | make active or more active |
| Act | make (substances) radioactive |
| Act | aerate (sewage) so as to favor the growth of organisms that decompose organic matter |