/ Thesaurus / S Synonyms of silicon valley Find synonyms for: Noun1. Silicon Valleyusage: a region in California to the south of San Francisco that is noted for its concentration of high-technology industriesWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language