/ Thesaurus / X Synonyms of xiphoid process Find synonyms for: Noun1. xiphoid process, bone, osusage: smallest of the three parts of the breastbone; articulates with the corpus sternum and the seventh ribWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language