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challenger

 - 3 dictionary results

chal⋅leng⋅er

[chal-in-jer]
–noun
1. a person or thing that challenges.
2. Boxing. a boxer who fights a champion for his championship title.
3. Radio. interrogator (def. 2).
4. (initial capital letter, italics) U.S. Aerospace. the second space shuttle to orbit and return to earth: exploded 1 1/2 min. after launch on Jan. 28, 1986, causing the death of all seven on board.

Origin:
1250–1300; ME; see challenge, -er 1

in⋅ter⋅ro⋅ga⋅tor

[in-ter-uh-gey-ter]
–noun
1. a person who interrogates.
2. Also called challenger. Radio. a transmitter that emits a signal to trigger a transponder.

Origin:
1745–55; < LL interrogātor; see interrogate, -tor
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To challenger
chal·leng·er   (chāl'ən-jər)   
n.  
  1. One that challenges: a challenger of established authority.

  2. Sports One who competes against the holder of a title or championship, as in boxing.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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