Breadcrumb Home > Thesaurus > O Synonyms of oestrus Find synonyms for: Noun 1. estrus, oestrus, heat, rut, physical condition, physiological state, physiological condition usage: applies to nonhuman mammals: a state or period of heightened sexual arousal and activity 2. Oestrus, genus Oestrus, arthropod genus usage: type genus of the Oestridae: sheep botflies WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of oestrus (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: soupon Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language