/ Thesaurus / A Synonyms of atomic number 103 Find synonyms for: Noun1. lawrencium, Lr, atomic number 103, chemical element, elementusage: a radioactive transuranic element synthesized from californiumWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language