| duramen | <botany> The heartwood of an exogenous tree. Origin: L, hardness, a hardened, i. E, ligneous, vine branch, fr. Durare to harden. See Dure. Source: Websters Dictionary (01 Mar 1998) |
|---|---|
| Duran-Reynals permeability factor | <enzyme> Enzyme that degrades hyaluronic acid, found in lysosomes. (18 Nov 1997) |
| Duran-Reynals, Francisco | <person> U.S. Bacteriologist, 1899-1958. See: Duran-Reynals permeability factor. (05 Mar 2000) |
| durapatite | <chemical> The mineral component of bones and teeth; it has been used therapeutically as a prosthetic aid and in the prevention and treatment of osteoporosis. Pharmacological action: biocompatible materials. Chemical name: Hydroxylapatite (Ca5(OH)(PO4)3) (12 Dec 1998) |
| duraplasty | A plastic or reconstructive operation on the dura mater. Origin: dura (mater) + G. Plastos, formed (05 Mar 2000) |
| duration | A continuous period of time. (05 Mar 2000) |
| duration tetany | A tonic spasm occurring in degenerated muscles upon application of a strong galvanic current. (05 Mar 2000) |