| prometaphase | <cell biology> Rarely used term that designates an extra stage in mitosis, starting with the breakdown of the nuclear envelope. Usually lumped in with metaphase. (18 Nov 1997) |
|---|---|
| prometaphase banding | Banding done in the stage of mitosis intermediate between prophase and metaphase. (05 Mar 2000) |
| promethazine | <chemical> A phenothiazine derivative with histamine h1-blocking, antimuscarinic, and sedative properties. It is used as an antiallergic, in pruritus, for motion sickness and sedation, and also in animals. Pharmacological action: anti-allergic agents, antiemetics, antipruritics, histamine h1 antagonists, sedatives, nonbarbiturate. Chemical name: 10H-Phenothiazine-10-ethanamine, N,N,alpha-trimethyl- (12 Dec 1998) |
| promethazine hydrochloride | 10-(2-Dimethylaminopropyl)phenothiazine hydrochloride;an antihistaminic with antiemetic properties. (05 Mar 2000) |
| promethazine theoclate | Promethiazine salt of 8-chlorotheophylline; an antihistaminic drug used for motion sickness. (05 Mar 2000) |
| promethea | <zoology> A large American bombycid moth (Callosamia promethea). Its larva feeds on the sassafras, wild cherry, and other trees, and suspends its cocoon from a branch by a silken band. Origin: NL. See Prometheus. Source: Websters Dictionary (01 Mar 1998) |
| promethean | <chemistry> An apparatus for automatic ignition. A kind of lucifer match. Source: Websters Dictionary (01 Mar 1998) |
| promethestrol dipropionate | Dimethylhexestrol dipropionate; 4,4'-(1,2-diethylethylene)di-o-cresol dipropionate;a synthetic oestrogen derived from stilbene. (05 Mar 2000) |
| prometheus | The son of Iapetus (one of the Titans) and Clymene, fabled by the poets to have surpassed all mankind in knowledge, and to have formed men of clay to whom he gave life by means of fire stolen from heaven. Jupiter, being angry at this, sent Mercury to bind Prometheus to Mount Caucasus, where a vulture preyed upon his liver. Origin: L, fr. Gr, from to have forethought for. Source: Websters Dictionary (01 Mar 1998) |
| promethium | <chemical> Promethium. A radioactive element of the rare earth family of metals. It has the atomic symbol pm, atomic number 61, and atomic weight 147. It has been used in the construction of atomic batteries, in the preparation of self-luminous compounds, and as a beta-particle source for thickness gauges. Chemical name: Promethium (12 Dec 1998) |
| prometryne | <chemical> A selective pre- and post-emergence herbicide. Pharmacological action: herbicides, triazine. Chemical name: 1,3,5-Triazine-2,4-diamine, N,N'-bis(1-methylethyl)-6-(methylthio)- (12 Dec 1998) |