Breadcrumb Home > Thesaurus > L Synonyms of lava Find synonyms for: Noun1. lava, volcanic rockusage: rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surfaceWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of lava (Dictionary) ✖ Related Content Daily Word Quiz: donnybrook Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language