| diestrual | (adjective) (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity | Synonyms: diestrous, dioestrous, dioestrual |
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| dioestrual | (adjective) (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity | Synonyms: diestrous, diestrual, dioestrous |
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| menstrual | (adjective) of or relating to menstruation or the menses | Synonyms: catamenial |
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| premenstrual | (adjective) of or relating to or occurring during the time just before menstruation | - |
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