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, 23 Sep. 2019 Lab tests showed that the Rhode Island woman’s percentage of methemoglobin was 44%. Beth Mole, Ars Technica, 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, 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

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

Dictionary Entries Near methemoglobin

metheglin

methemoglobin

methemoglobinemia

See More Nearby Entries 

Statistics for methemoglobin

Cite this Entry

“Methemoglobin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/methemoglobin. Accessed 28 Jan. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

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

WORD OF THE DAY

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
True or False

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

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!