/ Thesaurus / S Synonyms of second trimester Find synonyms for: Noun1. second trimester, trimesterusage: time period extending from the 13th to the 27th week of gestationWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language