/ Thesaurus / E Synonyms of epicyclic gear train Find synonyms for: Noun1. epicyclic train, epicyclic gear train, gearing, gear, geartrain, power train, trainusage: a system of epicyclic gears in which at least one wheel axis itself revolves about another fixed axisWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language