a portion of a naval fleet or a detachment of warships; a subdivision of a fleet.
an armored cavalry or cavalry unit consisting of two or more troops, a headquarters, and various supporting units.
the basic administrative and tactical unit, smaller than a group and composed of two or more flights.
a flight formation.
a number of persons grouped or united together for some purpose; group.
verb (used with object)
to form into a squadron or squadrons; marshal or array in or as if in squadrons.

1555–65; < Italian squadrone, equivalent to squadr(a) square + -one augmentative suffix

half-squadron, noun
subsquadron, noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
squadron (ˈskwɒdrən)
1.  a.  a subdivision of a naval fleet detached for a particular task
 b.  a number of naval units usually of similar type and consisting of two or more divisions
2.  a cavalry unit comprising two or more troops, headquarters, and supporting arms
3.  the basic tactical and administrative air force unit comprising two or more flights
[C16: from Italian squadrone soldiers drawn up in square formation, from squadrosquare]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin & History

1562, from It. squadrone, augmentative of squadra "battalion" (see squad).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
If a squadron goes down, that means other missiles have to pick up the slack.
See the squadron website calendar for details on which uniform to wear for each meeting.
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