methemoglobin

noun
met·​he·​mo·​glo·​bin | \ ˌmet-ˈhē-mə-ˌglō-bən How to pronounce methemoglobin (audio) \

Definition of methemoglobin

: a soluble brown crystalline basic blood pigment that differs from hemoglobin in containing ferric iron and in being unable to combine reversibly with molecular oxygen

Examples of methemoglobin in a Sentence

Recent Examples on the Web Typical levels of methemoglobin in the blood range from 0% to 2%. Beth Mole, Ars Technica, "Blueish woman with chocolaty blood highlights rare risk of common anesthetic," 23 Sep. 2019 Lab tests showed that the Rhode Island woman’s percentage of methemoglobin was 44%. Beth Mole, Ars Technica, "Blueish woman with chocolaty blood highlights rare risk of common anesthetic," 23 Sep. 2019 So, methemoglobinemia is a rare blood disorder that causes people to produce an abnormal amount of methemoglobin. Maggie O'neill, Health.com, "What is Methemoglobinemia? What to Know About the Rare Disorder That Turned One Woman’s Blood Blue," 19 Sep. 2019

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

See More

First Known Use of methemoglobin

1870, in the meaning defined above

History and Etymology for methemoglobin

International Scientific Vocabulary

Keep scrolling for more

Learn More about methemoglobin

Time Traveler for methemoglobin

Time Traveler

The first known use of methemoglobin was in 1870

See more words from the same year

Statistics for methemoglobin

Cite this Entry

“Methemoglobin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/methemoglobin. Accessed 21 Jan. 2021.

Keep scrolling for more

More Definitions for methemoglobin

methemoglobin

noun
met·​he·​mo·​glo·​bin
variants: or chiefly British methaemoglobin \ (ˈ)met-​ˈhē-​mə-​ˌglō-​bən How to pronounce methemoglobin (audio) \

Medical Definition of methemoglobin

: a soluble brown crystalline basic blood pigment that is found in normal blood in much smaller amounts than hemoglobin, that is formed from blood, hemoglobin, or oxyhemoglobin by oxidation, and that differs from hemoglobin in containing ferric iron and in being unable to combine reversibly with molecular oxygen

called also ferrihemoglobin

More from Merriam-Webster on methemoglobin

Britannica.com: Encyclopedia article about methemoglobin

Comments on methemoglobin

What made you want to look up methemoglobin? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Slippery Words Quiz—Changing with the Times

  • ducreux self portrait yawning
  • What is an earlier meaning of nice?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!