di·es·trus (dī-ěs'trəs) n. In female mammals, a short period of sexual quiescence between two estrus periods, during which the uterus is prepared for a fertilized ovum.
Main Entry: di·es·trus Pronunciation: (')dI-'es-tr&s Variants: alsodi·es·trum/-tr&m/or chiefly Britishdi·oes·trusalsodi·oes·trum/-'Es-/ Function: noun : a period of sexual quiescence that intervenes between twoperiods of estrus —di·es·trous/-tr&s/alsodi·es·tru·al/-tr&-w&l/or chiefly Britishdi·oes·trousalsodi·oes·tru·aladjective