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explorer

[ik-splawr-er, -splohr-] /ɪkˈsplɔr ər, -ˈsploʊr-/
noun
1.
a person or thing that explores.
2.
a person who investigates unknown regions:
the great explorers of the Renaissance.
3.
any instrument used in exploring or sounding a wound, a cavity in a tooth, or the like.
4.
(initial capital letter). Also called Explorer Scout. a person between the ages 14 and 20 who is an active participant in the exploring program sponsored by the Boy Scouts of America.
5.
(initial capital letter) Aerospace. one of a long series of U.S. scientific satellites: Explorer 1 (1958) was the first U.S. artificial satellite.
Origin
1675-1685
1675-85; explore + -er1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for explorer scout

Explorer1

/ɪkˈsplɔːrə/
noun
1.
(US) a member of the senior branch of the Scouts Brit equivalent Venture Scout

Explorer2

/ɪkˈsplɔːrə/
noun
1.
any of the first series of US satellites. Explorer 1, launched in 1958, confirmed the existence of intense radiation belts around the earth
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 explorer scout

explorer

n.

1680s, agent noun from explore. Replaced earlier exploratour (mid-15c.).

Online Etymology Dictionary, © 2010 Douglas Harper
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explorer scout in Medicine

explorer ex·plor·er (ĭk-splôr'ər)
n.
A sharp, pointed probe used on tooth surfaces to detect caries or other defects.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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