[ mahy-uh-gloh-bin, mahy-uh-gloh- ]

  1. hemoglobin of muscle, weighing less and carrying more oxygen and less carbon monoxide than blood hemoglobin.

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Origin of myoglobin

First recorded in 1920–25; myo- + globin
  • Also my·o·he·mo·glo·bin [mahy-uh-hee-muh-gloh-bin, ‐hem-uh‐]. /ˌmaɪ əˈhi məˌgloʊ bɪn, ‐ˈhɛm ə‐/.

Words Nearby myoglobin Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use myoglobin in a sentence

British Dictionary definitions for myoglobin


/ (ˌmaɪəʊˈɡləʊbɪn) /

  1. a protein that is the main oxygen-carrier of muscle

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for myoglobin


[ ə-glō′bĭn ]

  1. An iron-containing protein found in muscle fibers, consisting of heme connected to a single peptide chain that resembles one of the subunits of hemoglobin. Myoglobin combines with oxygen released by red blood cells and transfers it to the mitochondria of muscle cells, where it is used to produce energy.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.