/ Thesaurus / H Synonyms of hippocastanaceae Find synonyms for: Noun1. Hippocastanaceae, family Hippocastanaceae, horse-chestnut family, dicot family, magnoliopsid familyusage: trees having showy flowers and inedible nutlike seeds in a leathery capsuleWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language