| hoof-and-mouth disease | An obsolete term for foot-and-mouth disease. (05 Mar 2000) |
|---|---|
| hoof | Origin: OE. Hof, AS. Hof; akin to D. Hoef, G1huf, OHG. Huof, Icel. Hofr, Sw. Hof, Dan. Hov; cf. Russ. Kopuito, Skr. Capha. 1. The horny substance or case that covers or terminates the feet of certain animals, as horses, oxen, etc. "On burnished hooves his war horse trode." (Tennyson) 2. A hoofed animal; a beast. "Our cattle also shall go with us; there shall not a hoof be left behind." (Ex. X. 26) 3. <geometry> See Ungula. Source: Websters Dictionary (01 Mar 1998) |
| claw | <plant biology> A narrow, stalk-like basal portion of a petal, sepal or bract. (12 Jan 1998) |
| wolf's-claw | <botany> A kind of club moss. See Lycopodium. Source: Websters Dictionary (01 Mar 1998) |
| lobster-claw deformity | See: ectrodactyly. (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) |