Breadcrumb Home > Thesaurus > S Synonyms of semisynthetic Find synonyms for: Adjective 1. man-made, semisynthetic, synthetic, artificial (vs. natural), unreal usage: not of natural origin; prepared or made artificially; "man-made fibers"; "synthetic leather" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of semisynthetic (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: demagogue Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language