/ Thesaurus / U Synonyms of u308 Find synonyms for: Noun1. yellowcake, U308, compound, chemical compoundusage: an impure mixture of uranium oxides obtained during the processing of uranium oreWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: diaphanous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language