/ Dictionary / Index M methylene dioxyamphetamine: Meaning and Definition of Find definitions for: meth'ylene di•ox'y•am•phet'a•mine Pronunciation: (dī-ok'sē-am-fet'u-mēn", -min, -ok"sē-), [key] See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. methylene chloride methylene group Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language