/ Dictionary / Index J ja*: Meaning and Definition of Find definitions for: ja Pronunciation: (yä), [key] — adv. German. yes. JA Pronunciation: [key] joint account. Joint Agent. Judge Advocate. Junior Achievement. Ja. Pronunciation: [key] January. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. J, j jab Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language