| 单词 | oestrous cycle |
| 释义 | > as lemmasoestrous cycle oestrous cycle n. the reproductive cycle typical of most female mammals, in which there are regularly recurring periods of sexual receptivity and fertility separated by periods of sexual inactivity. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive cycle > [noun] oestrous cycle1900 1900 W. Heape in Q. Jrnl. Microsc. Sci. 44 60 The sexual season of all mammals is evidenced by a series of phenomena which constitute, in the absence of the male, one œstrous cycle (monœstrous mammals) or a series of œstrous cycles (polyœstrous mammals). 1920 Lancet 2 Oct. 727/1 Under well-regulated food conditions the œstrous cycle in the guinea-pig is almost uniformly 16–17 days in duration. 1992 Today's Horse (BNC) Feb. 15 If a mare is fit and healthy, with a normal oestrous cycle, there is no reason to suppose she will have problems in foaling. < as lemmas |
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