/ Dictionary / Index M monobath: Meaning and Definition of Find definitions for: mon•o•bath Pronunciation: (mon'u-bath", -bäth"), [key] — n. Photog. a developer and fixer combined in the same solution. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. monobasic sodium phosphate monoblastic Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language