met-

CIDE DICTIONARY

met-, [Gr. meta` between, with, after; akin to AS. mid with, G. mit, Goth. miþ, E. mid, in midwife.].

A prefix meaning between, with, after, behind, over, about, reversely; as, metachronism, the error of placing after the correct time; metaphor, lit., a carrying over; metathesis, a placing reversely. [1913 Webster]
Other; duplicate, corresponding to; resembling; hence, metameric; as, meta-arabinic, metaldehyde. [1913 Webster]
A prefix meaning at a level above, as in metaphysics, metalanguage. [PJC]