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Synonyms

moiety

American  
[moi-i-tee] / ˈmɔɪ ɪ ti /

noun

moieties plural
  1. a half.

  2. an indefinite portion, part, or share.

  3. Anthropology. one of two units into which a tribe or community is divided on the basis of unilineal descent.


moiety British  
/ ˈmɔɪɪtɪ /

noun

  1. a half

  2. one of two parts or divisions of something

"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

Other Word Forms

Noun Inflected Forms

Etymology

Origin of moiety

1400–50; late Middle English moite < Middle French < Latin medietāt- (stem of medietās ) the middle, equivalent to medi ( us ) mid + -etāt-, variant, after vowels, of -itāt- -ity

Explanation

A moiety is one of two equal parts. If you cut a sandwich in half, you can have one moiety for lunch and give the other moiety to a pigeon. One moiety plus one moiety equals a whole. Moiety is a synonym for the noun half; a semicircle or your better half can be referred to as a moiety. In anthropology, moiety is used to describe one of two distinct groups of a tribe. Moiety can also mean "a part" in general, as Shakespeare used it in Antony and Cleopatra: "The death of Antony / Is not a single doom; in the name lay / A moiety of the world."

Keep Reading on Vocabulary.com

Vocabulary lists containing moiety

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Others included a carboxylic acid moiety or a methyl ester side chain.

From Science Daily May 27, 2026

Garfield George, head of Deishú Hít, or the End of the Beaver Trail House, Raven moiety, Deisheetaan clan of Angoon, in Alaska, was one of the Tlingit visitors at that moment of discovery.

From New York Times May 5, 2022

The first category, also known as moiety acts, gives compensation to those providing information to prosecutors but leaves control of litigation in the hands of the government.

From Slate Feb. 10, 2022

Alkenes are much more reactive than alkanes because the moiety is a reactive functional group.

From Textbooks Feb. 14, 2019

Fugacious, tourbillion, moiety, repugn, sacrosanct, censure, morass, El Dorado, and turpitude.

From "Please Ignore Vera Dietz" by A.S. King

The reported compounds in question are NiII-coordinated norcorroles with modified aryl moieties as side chains.

From Science Daily May 23, 2024

"Designing new vaccines that utilize nanoparticles with specific chemical moieties which not only aid in antigen delivery but can also activate particular immune pathways have the potential to enhance vaccine potency."

From Science Daily Mar. 6, 2024

The C–C–N axis of the CH3CN moieties was constrained to be linear and the C–C and C–N distances were fixed to standard values.

From Nature Mar. 28, 2017

They usually consist of six or fewer amino acid residues in a protein, or one or two sugar moieties in a carbohydrate antigen.

From Textbooks Jun. 19, 2013

Holding it taut upon the blade of my knife, I cut through at the crease, and thus divided it into two moieties of equal length, each two feet long.

From The Boy Tar by Read, Edward

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