/ Thesaurus / C Synonyms of charles proteus steinmetz Find synonyms for: Noun1. Steinmetz, Charles Proteus Steinmetzusage: United States electrical engineer and inventor (born in Germany) (1865-1923)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language