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Noun
- 1. estrus, oestrus, heat, rut, physical condition, physiological state, physiological condition
- usage: applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
- 2. Oestrus, genus Oestrus, arthropod genus
- usage: type genus of the Oestridae: sheep botflies
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Definition and meaning of oestrus (Dictionary)