/ Thesaurus / C Synonyms of conic section Find synonyms for: Noun1. conic section, conic, plane figure, two-dimensional figureusage: (geometry) a curve generated by the intersection of a plane and a circular coneWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language