| oestrone | <chemical> 3-hydroxyestra-1,3,5(10)-trien-17-one. A metabolite of estradiol but possessing less biological activity. It is found in the urine of pregnant women and mares, in the human placenta, and in the urine of bulls and stallions. According to the fourth annual report on carcinogens (ntp 85-002, 1985), estrone may reasonably be anticipated to be a carcinogen (merck, 11th ed). Chemical name: Estra-1,3,5(10)-trien-17-one, 3-hydroxy- (12 Dec 1998) |
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| oestrosis | Infection of small ruminants and rarely humans with larvae of the fly Oestrus ovis. (05 Mar 2000) |
| oestrual | <physiology> Of or pertaining to sexual desire; mostly applied to brute animals; as, the oestrual period; oestrual influence. See: oestrus. Source: Websters Dictionary (01 Mar 1998) |
| oestruation | <physiology> The state of being under oestrual influence, or of having sexual desire. Source: Websters Dictionary (01 Mar 1998) |
| oestrus | 1. <zoology> A genus of gadflies. The species which deposits its larvae in the nasal cavities of sheep is oestrus ovis. 2. A vehement desire; especially. <physiology> The periodical sexual impulse of animals; heat; rut. Origin: L, a gadfly; also, frenzy, fr.Gr. Gadfly; hence, sting, fury, insane desire, frenzy. Source: Websters Dictionary (01 Mar 1998) |