| constitution and bylaws | The fundamental principles and laws adopted by an organization for the regulation and governing of its affairs. (12 Dec 1998) |
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| body constitution | The make-up of the body, determined by the genetic, biochemical, and physiologic endowment of the individual and modified in great measure by environmental factors. (12 Dec 1998) |
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| water of constitution | Water held by a unit of structure as an essential part of its constitution, though not an ingredient of its molecules. See: water of crystallization. (05 Mar 2000) |
| constitution | 1. The physical makeup of a body, including the mode of performance of its functions, the activity of its metabolic processes, the manner and degree of its reactions to stimuli, and its power of resistance to the attack of pathogenic organisms. 2. In chemistry, the number and kind of atoms in the molecule and the relation they bear to each other. Origin: L. Constitutio, constitution, disposition, fr. Constituo, pp. -stitutus, to establish, fr. Statuo, to set up (05 Mar 2000) |
| abstracting and indexing | Shortening or summarizing of documents; assigning of descriptors for referencing documents. (12 Dec 1998) |
| academies and institutes | Organizations representing specialised fields which are accepted as authoritative; may be non-governmental, university or an independent research organization, e.g., national academy of sciences, brookings institution, etc. (12 Dec 1998) |
| accounts payable and receivable | Short-term debt obligations and assets occurring in the regular course of operational transactions. (12 Dec 1998) |
| aged, 80 and over | A person 80 years of age and older. (12 Dec 1998) |
| algae and fungi | Algae represent a group of spore-propagating plants, unicellular or undifferentiated into root, stem, and leaf. They include seaweed and many unicellular fresh water plants, most of which contain chlorophyll. They account for about 90% of the earth's photosynthetic activity. Fungi are eukaryotic, heterotrophic organisms that live as saprobes or parasites and include mushrooms, yeasts, smuts, molds, etc. They lack chlorophyll. (12 Dec 1998) |
| alkyl and aryl transferases | <enzyme> A somewhat heterogeneous class of enzymes that catalyze the transfer of alkyl or related groups (excluding methyl groups). Registry number: EC 2.5 (12 Dec 1998) |
| allergy and immunology | A medical specialty concerned with the hypersensitivity of the individual to foreign substances and protection from the resultant infection or disorder. (12 Dec 1998) |
| alligators and crocodiles | Large, long-tailed reptiles, including caimans, of the order loricata. (12 Dec 1998) |
| Amine Precursor Uptake and Decarboxylation | <pharmacology, physiology> Paracrine cells of which argentaffin cells are an example. Usage of the term APUD is neither helpful nor memorable. Acronym: APUD (11 Nov 1997) |
| amino acids, peptides, and proteins | Amino acids and chains of amino acids connected by peptide linkages. (12 Dec 1998) |
| Anderson and Goldberger test | A test for typhus in which the patient's blood is injected into a guinea pig's peritoneal cavity. In typhus a typical temperature curve will be observed. (05 Mar 2000) |
| anniversaries and special events | Occasions to commemorate an event or occasions designated for a specific purpose. (12 Dec 1998) |