| electrolytes | Substances that dissociate into two or more ions, to some extent, in water. Solutions of electrolytes thus conduct an electric current and can be decomposed by it (electrolysis). (12 Dec 1998) |
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| aldehyde TPN transhydrogenase | <enzyme> An enzyme that oxidises an aldehyde in the presence of NAD+ and water to an acid and NADH. Before 1978, it was classified as EC 1.1.1.70. Chemical name: Aldehyde:NAD+ oxidoreductase Registry number: EC 1.2.1.3 (12 Dec 1998) |
| TPN | <pharmacology> Intravenous feeding that provides patients with all essential nutrients when they are unable to feed themselves. Acronym: TPN (12 Jan 1998) |