Main Entry: meth·yl·trans·fer·ase Pronunciation: -'tran(t)s-f&r-"As, -"Az Function: noun : any of several transferases thatpromote transfer of a methyl group from one compound to another
methyltransferase meth·yl·trans·fer·ase (měth'əl-trāns'fə-rās', -rāz') n. Any of several enzymes that catalyze the transfer of methyl groups from one compound to another. Also called transmethylase.