diestrual vs diestrous

diestrual and diestrous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
diestrual	No	Yes	No	No
diestrous	No	Yes	No	No

As adjectives, diestrual and diestrous are synonyms defined as:

diestrual and diestrous: (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity

Other synonyms of diestrual include dioestrous, dioestrual.

diestrual (adjective)	diestrous (adjective)
(of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity	(of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity