Breadcrumb Home > Thesaurus > S Synonyms of siliceous Find synonyms for: Adjective 1. siliceous, silicious usage: relating to or containing or resembling silica; "gritrock is siliceous sandstone" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of siliceous (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: triumphalism Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language