/ Dictionary / Index M malformed: Meaning and Definition of Find definitions for: mal•formed Pronunciation: (mal-fôrmd'), [key] — adj. faultily or anomalously formed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: malformed (Thesaurus) malformation malfunction Related Content Daily Word Quiz: belligerent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language