/ Thesaurus / O Synonyms of osteoblastoma Find synonyms for: Noun1. osteoblastoma, benign tumor, benign tumour, nonmalignant tumor, nonmalignant tumour, nonmalignant neoplasmusage: benign tumor of bone and fibrous tissue; occurs in the vertebrae or femur or tibia or arm bones (especially in young adults)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language