/ Thesaurus / F Synonyms of free central placentation Find synonyms for: Noun1. free central placentation, placentationusage: where ovules develop on a central column in a compound ovary lacking septa or with septa at base onlyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: grimace Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language