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myriad

American  
[mir-ee-uhd] / ˈmɪr i əd /

noun

myriads plural
  1. a very great or indefinitely great number of persons or things.

  2. ten thousand.


adjective

  1. of an indefinitely great number; innumerable.

    the myriad stars of a summer night.

  2. having innumerable phases, aspects, variations, etc..

    the myriad mind of Shakespeare.

    Synonyms:
    untold, infinite, boundless, countless
  3. ten thousand.

myriad British  
/ ˈmɪrɪəd /

adjective

  1. innumerable

"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

noun

  1. (also used in plural) a large indefinite number

  2. archaic ten thousand

"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

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of myriad

First recorded in 1545–55; from Greek mȳriad-, stem of mȳriás “ten thousand,” from mȳríos “countless”

Explanation

A myriad is a lot of something. If you’re talking about Ancient Greece, a myriad is ten thousand, but today you can use the word in myriad other ways. Myriad comes from the Greek myrioi, the word for ten thousand, or less specifically, a countless amount. Myriad can be a noun, like a myriad of choices, or an adjective, like when you study myriad subjects in college. If you lift a rock you might find a myriad of bugs. Sticklers often look down their noses at using myriad as a noun, but that usage came first.

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Vocabulary lists containing myriad

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:

Adapted from Kalki's 2021 book, The Elephant in the Womb, which she wrote just months after giving birth, the play takes an unflinching look at motherhood and the myriad emotions mothers go through.

From BBC Jul. 9, 2026

Americans will benefit from AI through pharmaceutical breakthroughs, productivity gains that raise wages, and myriad other ways that are hard to predict.

From The Wall Street Journal Jul. 6, 2026

The Financial Times reported there were myriad problems in the complex procurement process.

From Barron's Jun. 24, 2026

Raw dairy, his farm has claimed, could cure, treat or prevent myriad diseases and ailments, from diabetes and ear infections to allergies, eczema and arthritis.

From Salon Jun. 22, 2026

They seemed so straightforward in comparison, despite their myriad meanings.

From "The Night Circus" by Erin Morgenstern

“Beyond healthcare, this fusion of nanotechnology and cells can lead to unique living hybrid robots, opening up myriads of interesting applications.”

From Salon Dec. 15, 2023

Stacking one’s few belongings in a safe place, trying to understand what is yelled in German, Russian, Ukrainian, looking into myriads of unknown faces, worried faces, some smiling faces.

From Los Angeles Times Mar. 11, 2022

"Above all I want to thank those myriads of unassuming folk who have shown what love in action can achieve."

From BBC Dec. 24, 2021

Indeed, one way to approach quantum gravity is to aim to derive the Einstein equations, which are the laws general relativity applies to spacetime, from the laws of thermodynamics, applied to myriads of elementary events.

From Scientific American Apr. 4, 2019

Now she turned her head to see the myriads of Tralfamadorians outside the dome.

From "Slaughterhouse-Five" by Kurt Vonnegut

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