GRAMINIVOROUS Meaning of GRAMINIVOROUS in English [ ˌgramɪ'nɪv(ə)rəs ]■ adjective Zoology (of an animal) feeding on grass.OriginC18: from L. gramen , gramin- 'grass' + -vorous . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004