| prone | Lying face downward. (12 Dec 1998) |
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| prone position | The posture of an individual lying face down. (12 Dec 1998) |
| proneness | 1. The quality or state of being prone, or of bending downward; as, the proneness of beasts is opposed to the erectness of man. 2. The state of lying with the face down; opposed to supineness. 3. Descent; declivity; as, the proneness of a hill. 4. Inclination of mind, heart, or temper; propension; disposition; as, proneness to self-gratification. Source: Websters Dictionary (01 Mar 1998) |
| pronephric | <anatomy> Of or pertaining to the pronephros. Source: Websters Dictionary (01 Mar 1998) |
| pronephric duct | The duct of the pronephros; serves as the mesonephric duct. Synonym: nephric duct. (05 Mar 2000) |
| pronephric tubule | An excretory unit of the pronephros, present only in vestigial form in human embryos. (05 Mar 2000) |
| pronephron | <anatomy> The head kidney. See Head. Origin: NL, fr. Gr. Before + a kidney. Source: Websters Dictionary (01 Mar 1998) |
| pronephros | 1. The definitive excretory organ of primitive fishes. Synonym: head kidney. 2. In the embryos of higher vertebrates, a vestigial structure consisting of a series of tortuous tubules emptying into the cloaca by way of the primary nephric duct; in the human embryo, the pronephros is a very rudimentary and temporary structure, followed by the mesonephros and still later by the metanephros. Synonym: forekidney, primordial kidney. Origin: pro-+ G. Nephros, kidney (05 Mar 2000) |
| pronethalol hydrochloride | The hydrochloride of 2-isopropylamino-1-(2-naphthyl)ethanol; an early adrenergic beta-receptor blocking agent used as an antagonist of the cardiac action of epinephrine. (05 Mar 2000) |
| accident-prone | 1. Having a greater number of accidents than would be expected of the average person in similar circumstances. 2. Having personality characteristics predisposing one to accidents. (05 Mar 2000) |
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| coronary-prone behaviour | The behaviour that characterises type A personality pattern. (05 Mar 2000) |
| error-prone repair | <molecular biology> A type of DNA repair which occurs when both nucleotides in a base pair are missing, such that it is not possible to maintain accuracy. In general, the repair proteins replace the missing nucleotides randomly. The idea is that bad DNA is better than no DNA at all. (06 Mar 1998) |
| ketosis-prone diabetes | Type I or juvenile diabetes mellitus, in which inadequate treatment leads to development of ketoacidosis. (05 Mar 2000) |