\ ˈhēm How to pronounce heme (audio) \

Definition of heme

: the deep red iron-containing prosthetic group C34H32N4O4Fe of hemoglobin and myoglobin

Examples of heme in a Sentence

Recent Examples on the Web There’s soy and potato for protein, heme and yeast extract for flavor, coconut and sunflower oils for fat as well as methylcellulose and food starch for binders. Kirby Adams, The Courier-Journal, 25 Jan. 2022 Neutrophils are full of myeloperoxidase2, an enzyme that contains green-colored heme, or iron. Carolyn L. Todd, SELF, 9 Nov. 2021 The way Redwood City’s Impossible Foods makes its vegan pork is similar to its beefy burger recipe, with soy, coconut oil, sunflower oil and bioengineered soy leghemoglobin, otherwise known as heme. Janelle Bitker, San Francisco Chronicle, 11 Aug. 2021 This heme form of iron is very bioavailable in the body. Stefani Sassos, Ms, Rdn, Cso, Cdn, Nasm-cpt, Good Housekeeping, 14 July 2021 Porphyria is a group of disorders characterized by a defective enzyme our bodies need to make heme, the deep-red, iron-containing compounds that help transport oxygen throughout the body. Kristen Rogers, CNN, 11 June 2021 In identifying heme, that blood-like molecule, Brown had a galvanizing innovation. Virginia Heffernan, Wired, 1 Apr. 2020 The ingredient, known as heme, is a key additive for helping replicate the richness of meat flavors. BostonGlobe.com, 24 Oct. 2019 Impossible’s breakthrough involves a molecule called heme, which the company produces in tanks of genetically modified yeast. Tad Friend, The New Yorker, 23 Sep. 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'heme.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of heme

1925, in the meaning defined above

History and Etymology for heme

International Scientific Vocabulary, from hematin

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Cite this Entry

“Heme.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heme. Accessed 17 May. 2022.

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More Definitions for heme


variants: or chiefly British haem \ ˈhēm How to pronounce heme (audio) \

Medical Definition of heme

: the deep red iron-containing prosthetic group C34H32N4O4Fe of hemoglobin and myoglobin that is a ferrous derivative of protoporphyrin and readily oxidizes to hematin or hemin

called also protoheme

More from Merriam-Webster on heme

Britannica.com: Encyclopedia article about heme


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