This shows grade level based on the word's complexity.
heme
[ heem ]
/ him /
Save This Word!
This shows grade level based on the word's complexity.
noun Biochemistry.
a deep-red iron-containing blood pigment, C34H32N4O4Fe, obtained from hemoglobin.
QUIZ
ARE YOU A TRUE BLUE CHAMPION OF THESE "BLUE" SYNONYMS?
We could talk until we're blue in the face about this quiz on words for the color "blue," but we think you should take the quiz and find out if you're a whiz at these colorful terms.
Question 1 of 8
Which of the following words describes “sky blue”?
Meet Grammar CoachImprove Your Writing
Origin of heme
First recorded in 1920–25; shortened form of hematin
Words nearby heme
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
How to use heme in a sentence
Heme instantly drew forth a hunting-knife, and cutting Fenwolf's bonds asunder, the latter started to his feet.
Windsor Castle|William Harrison Ainsworth
Medical definitions for heme
heme
[ hēm ]
n.
The deep red, oxygen-carrying, nonprotein, ferrous component of hemoglobin.reduced hematin
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for heme
heme
[ hēm ]
The deep red, nonprotein, iron-containing component of hemoglobin that carries oxygen. Heme is a porphyrin with an iron atom at its center. One of the free valence electrons of the iron atom of heme is bound to the hemoglobin molecule, while the other is available for binding to an oxygen atom. A hemoglobin molecule contains four hemes. Chemical formula: C34H32FeN4O4.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.