sēmi-

I. half, demi-, semi-; as, semestris, semi-monthly; semesus, half-eaten; semideus, demigod, etc.; hence, also, for small, thin, light, etc.; as, semicinctium, semifunium, semipiscina, semispatha, al.—Only a very few of these compounds are ante-Aug.; most of them, indeed, belong only to the post-class. per.