| 单词 | oestrus |
| 释义 | Word Frequency oestrus(ˈiːstrəs, ˈɛstrəs) or US estrus or US estrum (ˈiːstrəm, ˈɛstrəm) noun a regularly occurring period of sexual receptivity in most female mammals, except humans, during which ovulation occurs and copulation can take place; heat Derived forms oestrous (ˈoestrous) or oestral (ˈoestral), US estrous (ˈestrous) or estral (ˈestral) adjective Word origin C17: from Latin oestrus gadfly, hence frenzy, from Greek oistros |
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