Breadcrumb Home > Thesaurus > N Synonyms of nucleolus Find synonyms for: Noun 1. nucleolus, nucleole, organelle, cell organelle, cell organ usage: a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of nucleolus (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: hagiography Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language