| cotton-wool spots | <clinical sign, ophthalmology> White, fuzzy areas on the surface of the retina (accumulations of cellular organelles) caused by damage (usually infarction) of the retinal fibre layer. Synonym: cotton-wool spots. (05 Mar 2000) |
|---|---|
| purified cotton | Absorbent cotton in which the hairs of the seed of varieties of Gossypium and other allied species are freed from adhering impurities, deprived of fatty matter, bleached, and sterilised; used for tampons, etc. (05 Mar 2000) |
| soluble gun cotton | <chemistry> A substance resembling gun cotton in composition and properties, but distinct in that it is more highly nitrified and is soluble in alcohol, ether, etc. Synonym: pyroxyle. Source: Websters Dictionary (01 Mar 1998) |
| styptic cotton | Absorbent cotton wet with a dilute solution of ferric chloride, and then dried; applied locally as a haemostatic. (05 Mar 2000) |