Breadcrumb Home > Thesaurus > P Synonyms of pyrogen Find synonyms for: Noun 1. pyrogen, substance usage: any substance characterized by its great flammability 2. pyrogen, pyrectic, substance usage: any substance that can cause a rise in body temperature WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of pyrogen (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: elegiac Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language