On`a·gra'ceous (ŏn`ȧ*grā'shŭs), On`a*gra*ri'e*ous (-gra*rī'e*ŭs) adjective [ From New Latin Onagra an old scientific name of the evening primrose ( OEnothera ), from Greek 'ona`gra a kind of plant; of uncertain origin.] (Botany... Found on http://www.encyclo.co.uk/webster/O/19
• (a.) Alt. of Onagrarieous
On`a·gra'ceous (ŏn`ȧ*grā'shŭs), On`a*gra*ri'e*ous (-gra*rī'e*ŭs) adjective [ From New Latin Onagra an old scientific name of the evening primrose ( OEnothera ), from Greek