• WordNet 3.6
    • n reconnaissance the act of reconnoitring (especially to gain information about an enemy or potential enemy) "an exchange of fire occurred on a reconnaissance mission"
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Webster's Revised Unabridged Dictionary
  • Interesting fact: The U.S. Army has a stealth reconnaissance helicopter named "The Duke" in honor of John Wayne.
    • n Reconnaissance (Geol) The act of reconnoitering; preliminary examination or survey.
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Century Dictionary and Cyclopedia
    • n reconnaissance The act or operation of reconnoitering; preliminary examination or survey. Specifically— An examination of a territory or of an enemy's position, for the purpose of directing military operations.
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Chambers's Twentieth Century Dictionary
    • n Reconnaissance re-kon′i-sans the act of reconnoitring: a survey or examination: the examination of a tract of country with a view to military or engineering operations
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Webster's Revised Unabridged Dictionary
F. See Recognizance
Chambers's Twentieth Century Dictionary


In literature:

On the following day, Saturday, another reconnaissance was made.
"South Africa and the Transvaal War, Vol. 2 (of 6)" by Louis Creswicke
This double reconnaissance should reveal any spies.
"A Virginia Scout" by Hugh Pendexter
Descending again from his reconnaissance, Trooper Stormont encountered Trooper Lannis below.
"The Flaming Jewel" by Robert W. Chambers
Reconnaissance Moon Flight Four.
"Get Out of Our Skies!" by E. K. Jarvis
But the reconnaissance and mapping of the mountain and its neighbourhood will fitly remain with us.
"The Heart of Nature" by Francis Younghusband
During the diplomatic reconnaissance led by Caulaincourt, the statesmen of these countries had been busy at Fontainebleau.
"The Life of Napoleon Bonaparte" by William Milligan Sloane
On this day we made a reconnaissance in force, but had no fighting.
"A Yeoman's Letters" by P. T. Ross
A careful reconnaissance of their lines disclosed an officer in artillery uniform up a willow tree.
"The Red Watch" by J. A. Currie
The reconnaissance was perfectly successful.
"History of the War in South Africa 1899-1902 v. 1 (of 4)" by Frederick Maurice
The reconnaissance showed that the Egyptians had erected a number of strong works across the end of the isthmus.
"A Chapter of Adventures" by G. A. Henty
The reconnaissances of August 22.
"The War in the Air; Vol. 1" by Walter Raleigh
Any defects he must try to make good by reconnaissance.
"Cavalry in Future Wars" by Frederick von Bernhardi
Reconnaissance must precede decisive action.
"Lessons of the war with Spain and other articles" by Alfred T. Mahan
The reconnaissance was followed by an attack on the town, which resulted in defeat.
"The Astronomy of the Bible" by E. Walter Maunder
A block away she waited for Brander, who accompanied her to her own gate, and waited while she made a cautious reconnaissance.
"Jennie Gerhardt" by Theodore Dreiser
It seemed a long, long time before he got Sheilah to the reconnaissance ship.
"High Dragon Bump" by Don Thompson
During two nights they made infinitely cautious reconnaissance.
"The Fifth-Dimension Tube" by William Fitzgerald Jenkins
The first 'graphs had been taken from an aerial reconnaissance robot winging in low over the treetops.
"The Asses of Balaam" by Gordon Randall Garrett
He must also be a trained reconnaissance man.
"Frigid Fracas" by Dallas McCord Reynolds
He consented, and we made further reconnaissance the next day.
"Company 'A', corps of engineers, U.S.A., 1846-'48, in the Mexican war" by Gustavus Woodson Smith

In news:

P-8A anti-submarine warfare, anti-surface warfare, intelligence, surveillance and reconnaissance jet.
An artist's conception shows the Lunar Reconnaissance Orbiter orbiting the moon, with Earth on the horizon.
Soldiers with the 1st Attack Reconnaissance Battalion paid homage Wednesday to four troops killed in the wars in Iraq and Afghanistan.
Winter Storm Reconnaissance Program Conducts Research in Alaska Skies.
In reconnaissance application scenarios, support for the analysis of important events that happened during a mission is highly desirable.
The Soviet-produced BRDM-2 was the standard wheeled reconnaissance vehicle of the Eastern Bloc during thelatter quarter of the 20th century.
The Sand Flea is a reconnaissance robot, recording right through its stunts.
A reconnaissance scout was sent to the hot zone to investigate, and promptly brought word that the rumor was, in fact, true.
This photo was made by the Mars Reconnaissance Orbiter on Jan 27, 2010.
The USAAF also used Spitfires for high speed photo reconnaissance.
NASA's Mars Reconnaissance Orbiter and two planet-based explorers are tracking a huge dust storm , offering scientists an opportunity to study the planet's weather like none they've had before.
Hurricane reconnaissance flying into Isaac.
Israeli 'spy vulture' nabbed during reconnaissance mission.
There were spies, reconnaissance missions, subterfuge, secret photos and lots of trash talk.
He vanished in 1944 on a reconnaissance mission.

In science:

The authors of found the high temporal correlation (frequently > 0.99) between flow counts on quiescent ports (TCP/IP ports which are not in regular use) at the one of the known pre-attack, so called reconnaissance, anomalous behavior, vertical scan.
Analysis of Inter-Domain Traffic Correlations: Random Matrix Theory Approach
The key is to detect and possibly prevent activities that may compromise system security, or some hacking attempt in progress including reconnaissance/data collection phases that involve for example, port scans.
IDPS: An Integrated Intrusion Handling Model for Cloud
The RDCS has not been completely identified yet but complete subsamples have been created to allow a statistical reconnaissance of the data.
Cluster Surveys
In this paper we continue our reconnaissance of the solar neighborhood by reporting results of the second phase of our SuperCOSMOS-RECONS (SCR) search for new high proper motion (HPM) ob jects in the southern sky.
The Solar Neighborhood XV: Discovery of New High Proper Motion Stars with mu >= 0.4"/yr between Declinations -47 degrees and 00 degrees
Reconnaissance d’ob jets par focalisation et detection de changements.
Hierarchical testing designs for pattern recognition
Nor will it prevent reconnaissance and broadcast storms at the data link layer.
Will the Butterfly Cipher keep your Network Data secure? Developments in Computer Encryption
The star-shell model is proving to be a fruitful tool for a preliminary reconnaissance of mass loss systems.
The molecular and dusty composition of Betelgeuse's inner circumstellar environment
Baade had often called Hubble’s approximations “enthusiastic magnitudes”, not out of derision but as a tribute to Hubble’s skill in devising by practical methods what he needed in his reconnaissance studies of difficult problems.
The Tolman Surface Brightness Test for the Reality of the Expansion. V. Provenance of the Test and a New Representation of the Data for Three Remote HST Galaxy Clusters
Baker (2005), ―Next-generation robotic planetary reconnaissance missions: A paradigm shift‖, Planetary and Space Science, 53, pp.
The Cyborg Astrobiologist: Testing a Novelty-Detection Algorithm on Two Mobile Exploration Systems at Rivas Vaciamadrid in Spain and at the Mars Desert Research Station in Utah
Chabot, Reconnaissance de codes, structure des codes quasicycliques, Ph.D. thesis, Xlim, Limoges University, Sep. 2009. J. H.
The Permutation Groups and the Equivalence of Cyclic and Quasi-Cyclic Codes
To apply innovative technology approaches that are measurably effective against practical attacks it is necessary to detect and identify the attack on reconnaissance stage.
New approach for network monitoring and intrusion detection
Thus we have undertaken a spectroscopic reconnaissance of a subset of Lanning stars, the results of which are the sub ject of this paper.
A Spectroscopic Reconnaissance of UV-Bright Stars
They are, however, well-suited for our purpose of carrying out a reconnaissance of Lanning stars, where the goals are to assess the distribution of spectral types and to identify unusual ob jects for possible later study.
A Spectroscopic Reconnaissance of UV-Bright Stars