Breadcrumb Home > Thesaurus > P Synonyms of preformation Find synonyms for: Noun1. preformation, theory of preformation, theoryusage: a theory (popular in the 18th century and now discredited) that an individual develops by simple enlargement of a tiny fully formed organism (a homunculus) that exists in the germ cellWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of preformation (Dictionary) ✖ Related Content Daily Word Quiz: taradiddle Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language