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duo

[doo-oh, dyoo-oh] /ˈdu oʊ, ˈdyu oʊ/
noun, plural duos.
1.
Music. duet.
2.
two persons commonly associated with each other; couple.
3.
two animals or objects of the same sort; two things ordinarily placed or found together; a pair:
a duo of lovebirds.
Origin of duo
1580-1590
1580-90; < Italian < Latin: two

duo-

1.
a combining form meaning “two,” used in the formation of compound words:
duologue.
Origin
combining form of Greek dýo, Latin duo two
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for duo
Contemporary Examples
Historical Examples
  • I heard every note, and thought the trees and the brook were enjoying a duo, and—Bon Dieu!

    Melomaniacs James Huneker
  • It had been singing with her the duo of which lightly she had spoken.

    The Paliser case Edgar Saltus
  • The duo scrubbed each other daily in—a biscuit tin of water.

    Norman Ten Hundred

    A. Stanley Blicq
  • duo would have had him driven away, but Suo felt compassion for him.

    Tales of Folk and Fairies Katharine Pyle
  • duo was very willing to do this; she had no longer any use for them.

    Tales of Folk and Fairies Katharine Pyle
British Dictionary definitions for duo

duo

/ˈdjuːəʊ/
noun (pl) duos, dui (ˈdjuːiː)
1.
(music)
  1. a pair of performers
  2. another word for duet
2.
a pair of actors, entertainers, etc
3.
(informal) a pair of closely connected individuals
Word Origin
C16: via Italian from Latin: two

duo-

combining form
1.
indicating two: duotone
Word Origin
from Latin
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
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Word Origin and History for duo
n.

1580s, "song for two voices," via either Italian or French, from Latin duo "two" (see two). Meaning "two people" (especially as an entertainment team) attested by 1887.

Online Etymology Dictionary, © 2010 Douglas Harper
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4
5
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