a very great or indefinitely great number of persons or things.
ten thousand.


of an indefinitely great number; innumerable: the myriad stars of a summer night.
having innumerable phases, aspects, variations, etc.: the myriad mind of Shakespeare.
ten thousand.

Origin of myriad

1545–55; < Greek mȳriad- (stem of mȳriás) ten thousand; see -ad1
Related formsmyr·i·ad·ly, adverb

Synonyms for myriad Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for myriad

Contemporary Examples of myriad

Historical Examples of myriad

  • Besides the law of meat, there were a myriad other and lesser laws for him to learn and obey.

    White Fang

    Jack London

  • It swept toward the dome and dissociated into a myriad specks which were aircraft.


    William Fitzgerald Jenkins

  • I saw a myriad of flashing lights, heard a tremendous crash, and—that was all.

    Against Odds

    Lawrence L. Lynch

  • Seven o'clock had already been rung by the myriad bells of Moscow.

    The Genius

    Margaret Horton Potter

  • The storm in the night had swelled the myriad creeks, and extended all morasses.

    The Long Roll

    Mary Johnston

British Dictionary definitions for myriad





(also used in plural) a large indefinite number
archaic ten thousand

Word Origin for myriad

C16: via Late Latin from Greek murias 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

Word Origin and History for myriad

1550s, from Middle French myriade and directly from Late Latin myrias (genitive myriadis) "ten thousand," from Greek myrias (genitive myriados) "a number of ten thousand, countless numbers," from myrios (plural myrioi) "innumerable, countless, infinite; boundless," as a definite number, "ten thousand" ("the greatest number in Greek expressed by one word," Liddell & Scott say), of unknown origin; perhaps from PIE *meue- "abundant" (cf. Hittite muri- "cluster of grapes," Latin muto "penis," Middle Irish moth "penis"). Specific use is usually in translations from Greek or Latin.


c.1800, from myriad (n.).

Online Etymology Dictionary, © 2010 Douglas Harper