explorer scout

explorer

[ik-splawr-er, -splohr-]
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:
1675–85; explore + -er1

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
Explorer1 (ɪkˈsplɔːrə)
 
n
(US) Brit equivalent: Venture Scout a member of the senior branch of the Scouts

Explorer2 (ɪkˈsplɔːrə)
 
n
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 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

explorer
1680s, agent noun from explore. Replaced earlier exploratour (mid-15c.).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

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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