/ Thesaurus / B Synonyms of baja california Find synonyms for: Noun1. Lower California, Baja Californiausage: a mountainous peninsula on northwest MexicoWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: magnanimous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language