forming words, denoting:
a position behind or beyond
metacarpus
a later or more highly organized or specialized form
metazoan
a change or transformation
metamorphosis
metabolism
something more comprehensive or of a higher or second order
metapsychology
metalanguage
a substitution at two positions in the benzene ring that are separated by one carbon atom: compare orth-, para-1
[via Latin from Greek meta among, with, after]