Breadcrumb Home > Thesaurus > P Synonyms of penetralia Find synonyms for: Noun1. penetralia, inside, interiorusage: the innermost partsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of penetralia (Dictionary) ✖ Related Content Daily Word Quiz: tendentious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language