Breadcrumb Home > Thesaurus > T Synonyms of thermos Find synonyms for: Noun 1. thermos, thermos bottle, thermos flask, vacuum flask, vacuum bottle usage: vacuum flask that preserves temperature of hot or cold drinks WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of thermos (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: panache Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language