/ Dictionary / Index D dimethyl: Meaning and Definition of Find definitions for: di•meth•yl Pronunciation: (dī-meth'ul), [key] — n. Chem. ethane. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dimethoxymethane dimethylanthranilate Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language