• WordNet 3.6
    • n duo a musical composition for two performers
    • n duo a pair who associate with one another "the engaged couple","an inseparable twosome"
    • n duo two performers or singers who perform together
    • n duo two items of the same kind
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Snoopy and Charlie Brown appeared together on the March 17th, 1967 cover of Life Magazine. The Apollo X astronauts took the duo into space in 1969.
    • n duo The same as duet. A distinction is sometimes made by using duet for a two-part composition for two voices or instruments of the same kind, and duo for such a composition for two voices or instruments of different kinds.
    • n duo A prefix in words of Latin or Greek origin, meaning ‘two.’
    • ***
Chambers's Twentieth Century Dictionary
    • n Duo dū′o a song in two parts.
    • ***


Chambers's Twentieth Century Dictionary
L. duo, two.


In literature:

Honorati Fabri Tractatus duo; Prior, de Plantis et de Generatione Animalium; Posterior, de Homine.
"Philosophical Transactions of the Royal Society - Vol 1 - 1666" by Various
What an enchantment that duo is!
"The Paliser case" by Edgar Saltus
Robinson did not anticipate the unlikely duo which would bring down the public loan office.
"The Road to Independence: Virginia 1763-1783" by Virginia State Dept. of Education
Guillelmus de Vernon tenet inde duo feoda et dimidium.
"Architectural Antiquities of Normandy" by John Sell Cotman
LIBER VITAE ECCLESIAE DUNELMENSIS; nec non Obituaria duo Ejusdem Ecclesiae.
"Notes and Queries, Number 239, May 27, 1854" by Various
They then lament their unhappy fate in a short duo.
"Physiology of The Opera" by John H. Swaby (AKA "Scrici")
You never heard the duo which Flaubert gives, did you?
"The Truth About Tristrem Varick" by Edgar Saltus
Came to be known as 'The Luke and Wehner Duo.
"Famous Flyers" by J. J. Grayson
I prefer duos to trios, decidedly.
"Problematic Characters" by Friedrich Spielhagen
Illustrated in duo-tone with line cuts by Will Bradley and others.
"Literature for Children" by Orton Lowe

In poetry:

"Poeta volontieri
Parlerei a que' duo che' insieme vanno,
E pajon si al vento esser leggieri."
Dell' Inferno, Canto .
"To Dante" by Frances Anne Kemble
The butter-making, bread and cheese,
The old folks difficult to please,
The harvest hands--voracious bears!--
The infantry, a parent's pride,
By duos proudly classified:
So multiplied her cares.
"Never Had A Chance" by Hattie Howard

In news:

"Dynamic duo" of Romney, Ryan get enthusiasm bump.
From the New England duo's forthcoming 'Knock Knock Get Up' LP, due September 4.
The chef duo put a Mediterranean twist on Grilled Pork Chops.
The satire is worn thin in the Rock of Ages era, but duo still slays the Darkness' harmonies.
Salty Duo Clean Up ' Fenix '.
As Penn students, in the early part of the last decade, Dan Fishback and Sara FitzSimmons and friends used to serenade Philly in the perky, quirky duo called Cheese on Bread.
But in reality, these golden odes come from a barely post-teen sister duo, Swedes in woolen jumpers, ladies of the fjords doing a pitch-perfect proffer of lilting Laurel Canyon Americana.
Design duo Costello Tagliapietra paired prints with sleek silhouettes for the line's fall collection that debuted at New York Fashion Week.
SF duo Tidelands returns with even more flugelhorn.
SF duo Tidelands returns with even more flugelhorn .
Back to The HooK front page MUSIC REVIEW- Folksy , bluesy, toe-tappy duo.
Chicago duo mixes footwork with brain work to form something called "wurkstep".
A dynamic duo is behind one of the stories of the year.
Union Rags Takes on Pletcher Duo in FOY .
Unusual duo gets its groove on.

In science:

So far we have assumed that the graded completions that are associated with all the duo and uniformization limit groups that are constructed along our iterative procedure contain no abelian vertex groups in the abelian decompositions that are associated with their various levels.
Diophantine Geometry over Groups IX: Envelopes and Imaginaries
At this stage we drop this assumption, and consider general duo and uniformization limit groups.
Diophantine Geometry over Groups IX: Envelopes and Imaginaries
We continue with all the (finitely many) Extra resolutions and Extra limit groups of the prescribed structure, that were constructed from the duo resolution, DuoRes, i.e., from the couple of resolutions, M GResu and M GResv .
Diophantine Geometry over Groups IX: Envelopes and Imaginaries
These additional elements do not generally obey the separation of variables that was achieved so far, i.e., it involves the entire duo resolution, DuoRes, that was constructed from the multi-graded resolutions, M GResu and M GResv , and can not be imposed on each of its graded completions separately.
Diophantine Geometry over Groups IX: Envelopes and Imaginaries
Let DuoRes be a duo resolution, that is composed from the two multi-graded resolutions, M GResu and M GResv .
Diophantine Geometry over Groups IX: Envelopes and Imaginaries