/ Thesaurus / T Synonyms of triangulum australe Find synonyms for: Noun1. Triangulum Australe, Southern Triangleusage: a small bright constellation in the polar region of the southern hemisphere near Circinus and ApusWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: ravenous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language