O / ŏrexis
noun greek

ŏrexis

gen. ŏrexis · gender feminine · decl. 3rd
a longing; appetite
a longing, appetite (post-Aug.): rabidam facturus orexim, Juv. 6, 428: hinc surgit orexis, id. 11, 127: orexin, Lampr. Elag. 29 fin.