RUMINANT Meaning of RUMINANT in English ru ‧ mi ‧ nant /ˈruːmənənt, ˈruːmɪnənt/ BrE AmE noun [countable] technical an animal such as a cow that has several stomachs and eats grass Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012