Breadcrumb Home > Thesaurus > S Synonyms of silica Find synonyms for: Noun 1. silica, silicon oxide, silicon dioxide, oxide usage: a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of silica (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: quisling Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language