reconnaissance
Americannoun
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the act of reconnoitering.
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Military. a search made for useful military information in the field, especially by examining the ground.
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Surveying, Civil Engineering. a general examination or survey of a region, usually followed by a detailed survey.
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Geology. an examination or survey of the general geological characteristics of a region.
noun
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the act of reconnoitring
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the process of obtaining information about the position, activities, resources, etc, of an enemy or potential enemy
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a preliminary inspection of an area of land before an engineering survey is made
Other Word Forms
Noun Inflected Forms
Etymology
Origin of reconnaissance
1800–10; < French; Middle French reconoissance recognizance
Explanation
Reconnaissance is checking out a situation before taking action. Often it’s used as a military term, but you could also do reconnaissance on a new employee before you hire her, or a resort before you take a vacation. Reconnaissance is a noun, and it technically means “the act of reconnoitering.” Whoa. Never heard that word before? Reconnoitering is just a fancy way of saying that you’re checking something out — sometimes in a sneaky way. If you like a girl in your Spanish class, you might ask a friend to do some reconnaissance to find out what she’s like. The word comes from the French reconnaître, which means “recognize.”
Vocabulary lists containing reconnaissance
In the Know: Cogn, Conn
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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:
North Korean leader Kim Jong Un has called for radical upgrades to the country’s military reconnaissance and intelligence capabilities.
From The Wall Street Journal ● Jul. 25, 2026
Mohammad Bashir, 31, drove Jihad Al-Shamie on a 10-hour round trip to conduct hostile reconnaissance at the UK's Defence Academy in Shrivenham, Oxfordshire, on 14 August 2025.
From BBC ● Jul. 23, 2026
"Military reconnaissance takes on a different meaning under a state-to-state approach, as intelligence activities targeting another sovereign state can carry diplomatic implications," he told AFP.
From Barron's ● Jul. 10, 2026
On a reconnaissance mission, Jessie climbs to the roof and discovers the root of this strange standoffishness: Every child, in every window, has their face glued to a screen.
From Salon ● Jun. 21, 2026
Then he remembered how Bigwig, after his reconnaissance on the previous day, had spoken of the little white sticks in the grass.
From "Watership Down: A Novel" by Richard Adams
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There will be reconnaissances to Trent Bridge to have a look at Australia's opener, Ed Cowan, who has signed for Nottinghamshire for the early part of the season.
From The Guardian ● Apr. 6, 2013
Since then there have been three major reconnaissances of nerves.
From Time Magazine Archive
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As an intelligence officer, Mowat is particularly vulnerable when he delivers messages and undertakes reconnaissances.
From Time Magazine Archive
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Taylor was harder on himself than anyone, making personal reconnaissances by Jeep, risking injury unnecessarily by sitting stubbornly at a staff table while shells fell in the courtyard outside.
From Time Magazine Archive
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It was announced by the French Foreign Office that from the beginning of hostilities up to February 1, 1915, French aircraft had made 10,000 reconnaissances, covering a total of more than 1,250,000 miles.
From The Story of the Great War, Volume IV (of 8) Champagne, Artois, Grodno; Fall of Nish; Caucasus; Mesopotamia; Development of Air Strategy; United States and the War by Miller, Francis Trevelyan
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.