Breadcrumb Home > Thesaurus > H Synonyms of hb Find synonyms for: Noun 1. hemoglobin, haemoglobin, Hb, hemoprotein, haemoprotein usage: a hemoprotein composed of globin and heme that gives red blood cells their characteristic color; function primarily to transport oxygen from the lungs to the body tissues; "fish have simpler hemoglobin than mammals" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of hb (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: raconteur Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language