| rhizome | <plant biology> A horizontal underground stem which can send out both shoots and roots, rhizomes sometimes have thickened areas that store starch. (23 Aug 1998) |
|---|---|
| rhizome chaff | <botany> Mechanically chopped-up pieces of thin rhizomes spread on the ground and covered with soil so they can take root and form new plants. (23 Aug 1998) |
| rhizome cutting | <botany> Part of a thick rhizome, which may take root and form a new plant. (23 Aug 1998) |
| alcoholic extract | A solid extract obtained by extracting the alcohol-soluble principles of a drug, followed by the evaporation of the alcohol. (05 Mar 2000) |
| allergenic extract | Extract (usually containing protein) from various sources, e.g., food, bacteria, pollen, and the like, suspected of specific action in stimulating manifestations of allergy; may be used for skin testing or desensitization. Synonym: allergic extract. (05 Mar 2000) |
| allergic extract | Extract (usually containing protein) from various sources, e.g., food, bacteria, pollen, and the like, suspected of specific action in stimulating manifestations of allergy; may be used for skin testing or desensitization. Synonym: allergic extract. (05 Mar 2000) |
| belladonna extract | A powdered extract from the leaves and/or roots of Atropa belladonna; used to formulate various pharmaceutical dosage forms. Contains the alkaloids of belladonna (atropine and scopolamine) and has been used in the treatment of ulcers, diarrhoea, and parkinsonism. (05 Mar 2000) |
| Buchner extract | A cell-free extract of yeast, such as was prepared by Eduard and Hans Buchner and observed to catalyze alcoholic fermentation; this observation essentially eliminated "vitalism" as being responsible for biological chemical reactions and initiated the beginnings of modern biochemistry (enzymology). (05 Mar 2000) |
| cell-free extract | <cell culture> A liquid that is a mixture of the contents of a particular type of cell, sometimes the organelles are also filtered out of the liquid. (26 Mar 1998) |
| goulards extract | <medicine> An aqueous solution of the subacetate of lead, used as a lotion in cases of inflammation. Goulard's cerate is a cerate containing this extract. Origin: Named after the introducer, Thomas Goulard, a French surgeon. Source: Websters Dictionary (01 Mar 1998) |
| pollen extract | Liquid obtained by extracting the protein from the pollen of plants used for diagnostic testing or treatment. (05 Mar 2000) |
| hydroalcoholic extract | A solid extract obtained by extracting the soluble principles of the drug with alcohol and water, followed by evaporation of the solution. (05 Mar 2000) |
| equivalent extract | A fluidextract of the same strength, weight for weight, as the original drug. Synonym: valoid. (05 Mar 2000) |
| extract | <pharmacology> A concentrated preparation of a vegetable or animal drug obtained by removing the active constituents therefrom with a suitable menstruum, evaporating all or nearly all the solvent and adjusting the residual mass or powder to a prescribed standard. Extracts are prepared in three forms, semiliquid or of syrupy consistency, pilular or solid and as dry powder. Origin: L. Extractum (18 Nov 1997) |
| yeast extract agar | A medium used to induce sporulation and reduce vegetative growth in the cultivation of fungi. (05 Mar 2000) |