[ ˌgramɪ'neɪʃəs ]
■ adjective Botany relating to or denoting plants of the grass family (Gramineae).
Origin
C19: from L. gramen , gramin- 'grass' + -aceous .
GRAMINACEOUS
Meaning of GRAMINACEOUS in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004