/ Dictionary / Index M maintainor: Meaning and Definition of Find definitions for: main•tain•or Pronunciation: (mān-tā'nur), [key] — n. Law. a person guilty of maintenance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. maintain maintenance Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language