/ Thesaurus / P Synonyms of porta Find synonyms for: Noun1. orifice, opening, porta, passage, passagewayusage: an aperture or hole that opens into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language