/ Thesaurus / A Synonyms of atomic number 97 Find synonyms for: Noun1. berkelium, Bk, atomic number 97, metallic element, metalusage: a radioactive transuranic element; discovered by bombarding americium with heliumWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: kiln Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language