/ Thesaurus / S Synonyms of subthalamic nucleus Find synonyms for: Noun1. subthalamic nucleus, nucleus, cell nucleus, karyonusage: an oval mass of grey matter located in the caudal part of the subthalamus; associated with the striate bodyWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language