/ Dictionary / Index B batho-: Meaning and Definition of Find definitions for: batho- Pronunciation: [key] a combining form meaning “depth,” used in the formation of compound words: bathometer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bath mitzvah batholith Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language