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单词 challenger
释义

WordReference Random House Unabridged Dictionary of American English © 2024
chal•leng•er  (chalin jər),USA pronunciation n. 
  1. a person or thing that challenges.
  2. Sport[Boxing.]a boxer who fights a champion for his championship title.
  3. Radio and Televisioninterrogator (def. 2).
  4. Aerospace(cap., italics) [U.S. Aerospace.]the second space shuttle to orbit and return to earth: exploded 1½ min. after launch on Jan. 28, 1986, causing the death of all seven on board.
  • 1250–1300; Middle English; see challenge, -er1

WordReference Random House Learner's Dictionary of American English © 2024
chal•lenge /ˈtʃælɪndʒ/USA pronunciation   n., v., -lenged, -leng•ing. 
n. 
  1. a call to compete in a contest or in a fight: [countable]I accept your challenge to a duel.[uncountable]A hint of challenge appeared on his face.
  2. something that by its nature is a test or a difficult thing to accomplish: [countable]Space exploration offers a challenge to humankind.[uncountable]I'd like work with a bit more challenge than this useless drudgery.
  3. a demand, request, or question to explain or justify something:[countable* ~ + to]His criticism was a challenge to every proposal we had made.

v. [+ object]
  1. to summon (someone) to a contest or fight:[+ object + to + object]He challenged his foe to a duel.
  2. to test (someone) because of its difficulty:This obstacle course will really challenge him.
  3. to demand or question whether (something or someone) is correct, proper, or qualified:The leaders of the revolt challenged the dictator's authority.
  4. Militaryto halt and demand identification from:The guard challenged the reporter when she tried to enter the army base.
chal•leng•er, n. [countable]

WordReference Random House Unabridged Dictionary of American English © 2024
chal•lenge  (chalinj),USA pronunciation n., v., -lenged, -leng•ing, adj. 
n. 
  1. a call or summons to engage in any contest, as of skill, strength, etc.
  2. something that by its nature or character serves as a call to battle, contest, special effort, etc.:Space exploration offers a challenge to humankind.
  3. a call to fight, as a battle, a duel, etc.
  4. a demand to explain, justify, etc.:a challenge to the treasurer to itemize expenditures.
  5. difficulty in a job or undertaking that is stimulating to one engaged in it.
  6. Militarythe demand of a sentry for identification or a countersign.
  7. Lawa formal objection to the qualifications of a particular juror, to his or her serving, or to the legality of an entire jury. Cf. peremptory challenge.
  8. Governmentthe assertion that a vote is invalid or that a voter is not legally qualified.
  9. Physiology[Biol.]the process of inducing or assessing physiological or immunological activity by exposing an organism to a specific substance.
  10. Sport[Hunting.]the crying of a hound on finding a scent.

v.t. 
  1. to summon to a contest of skill, strength, etc.
  2. to take exception to;
    call in question:to challenge the wisdom of a procedure.
  3. to demand as something due or rightful.
  4. Militaryto halt and demand identification or countersign from.
  5. Lawto take formal exception to (a juror or jury).
  6. to have a claim to;
    invite;
    arouse;
    stimulate:a matter which challenges attention.
  7. Governmentto assert that (a vote) is invalid.
  8. Governmentto assert that (a voter) is not qualified to vote.
  9. Physiologyto expose an organism to a specific substance in order to assess its physiological or immunological activity.
  10. [Archaic.]to lay claim to.

v.i. 
  1. to make or issue a challenge.
  2. Sport[Hunting.](of hounds) to cry or give tongue on picking up the scent.

adj. 
  1. donated or given by a private, corporate, or government benefactor on condition that the recipient raise an additional specified amount from the public:a challenge grant.
  • Latin calumnia calumny
  • Old French, variant of chalonge
  • Middle English chalenge 1175–1225
challenge•a•ble, adj. 
    • 11.See corresponding entry in Unabridged dare, bid, invite.
    • 12.See corresponding entry in Unabridged question, impute, doubt.

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更新时间:2025/2/23 12:57:23