/ Dictionary / Index M methylic: Meaning and Definition of Find definitions for: me•thyl•ic Pronunciation: (me-thil'ik), [key] — adj. of, pertaining to, or characteristic of the methyl group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. methylheptenone methylidyne group Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language