Mes"o- (?), Mes- (?). [Gr. in the middle.]

A combining form denoting in the middle, intermediate; specif. Chem., denoting a type of hydrocarbons which are regarded as methenyl derivatives. Also used adjectively.

<-- in Chem., now used differently, for optical isomers -->


© Webster 1913.

Log in or registerto write something here or to contact authors.