pro-oestrus

[ proh-es-truh s, -ee-struh s ]
/ proʊˈɛs trəs, -ˈi strəs /

noun

British Dictionary definitions for pro-oestrus

pro-oestrus

US proestrus

/ (prəʊˈiːstrəs, -ˈɛstrəs) /

noun

the period in the oestrous cycle that immediately precedes oestrus