/ Dictionary / Index M mbd: Meaning and Definition of Find definitions for: mbd Pronunciation: [key] (of oil) million barrels per day. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mbd (Thesaurus) Mbandaka MBE Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language