monestrous

mon·es·trous

(mon-es'trŭs),

Having but one estrous cycle in a mating season.

monestrous

(mŏn-ĕs′trəs)

adj.

Having an estrous cycle that occurs only once during a single breeding season, usually annually.

monestrous

(mŏn-ĕs′trŭs)

Having a single estrous cycle in a single sexual season.