Breadcrumb Home > Thesaurus > P Synonyms of pycnogonida Find synonyms for: Noun1. Pycnogonida, order Pycnogonida, animal orderusage: sea spidersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. ✖ Related Content Daily Word Quiz: acronym Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language