/ Thesaurus / T Synonyms of thessalia Find synonyms for: Noun1. Thessalia, Thessalyusage: a fertile plain on the Aegean Sea in east central Greece; Thessaly was a former region of ancient GreeceWordNet 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