| umbilicated cataract | Congenital cataract in which a central white membrane replaces the nucleus. Synonym: disk-shaped cataract, life-belt cataract, umbilicated cataract. (05 Mar 2000) |
|---|---|
| zonular cataract | A cataract in which the opacity is limited to the cortex. Synonym: zonular cataract. (05 Mar 2000) |
| fibroid cataract | A sclerotic hardening of the capsule of the lens, following exudative iridocyclitis. (05 Mar 2000) |
| floriform cataract | A congenital cataract with opacities arranged like the petals of a flower. (05 Mar 2000) |
| lamellar cataract | A cataract in which the opacity is limited to the cortex. Synonym: zonular cataract. (05 Mar 2000) |
| furnacemen's cataract | A cataract secondary to absorption of heat by the lens, or by transmission from the adjacent iris. Synonym: furnacemen's cataract, glassworker's cataract. (05 Mar 2000) |
| fusiform cataract | A cataract in which the opacity is fusiform, extending from one pole to the other. Synonym: fusiform cataract. (05 Mar 2000) |
| life-belt cataract | Congenital cataract in which a central white membrane replaces the nucleus. Synonym: disk-shaped cataract, life-belt cataract, umbilicated cataract. (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) |