From Wiktionary, the free dictionary
From mon- + estrous.
monestrous (not comparable)
- (biology) Of or pertaining to a mammal, such as the dog, that only enters into heat once during each of its normal breeding cycles.
1977, Solomon Zuckerman, Barbara J. Weir, editors, The Ovary: Volume 2 Physiology[1], 2nd edition, →ISBN:The dog, wolf, and fox are monestrous, the fox and wolf having one and the dog two cycles in a year.
2005, Robert Hine, The Facts on File Dictionary of Biology, 4th edition, →ISBN, page 129:Males of monestrous species also exhibit a cycle, being sexually active only during the females' estrus.
2013, William O. Reece, Functional Anatomy and Physiology of Domestic Animals, →ISBN, page 477:Most wild carnivorous mammals are monestrous.
