Pronunciation: (chal'inj), [key]
— n., v., adj. -lenged, -leng•ing,
- a call or summons to engage in any contest, as of skill, strength, etc.
- something that by its nature or character serves as a call to battle, contest, special effort, etc.: Space exploration offers a challenge to humankind.
- a call to fight, as a battle, a duel, etc.
- a demand to explain, justify, etc.: a challenge to the treasurer to itemize expenditures.
- difficulty in a job or undertaking that is stimulating to one engaged in it.
- the demand of a sentry for identification or a countersign.
- a 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.
- the assertion that a vote is invalid or that a voter is not legally qualified.
- the process of inducing or assessing physiological or immunological activity by exposing an organism to a specific substance.
- the crying of a hound on finding a scent.
- to summon to a contest of skill, strength, etc.
- to take exception to; call in question: to challenge the wisdom of a procedure.
- to demand as something due or rightful.
- to halt and demand identification or countersign from.
- to take formal exception to (a juror or jury).
- to have a claim to; invite; arouse; stimulate: a matter which challenges attention.
- to assert that (a vote) is invalid.
- to assert that (a voter) is not qualified to vote.
- to expose an organism to a specific substance in order to assess its physiological or immunological activity.
- to lay claim to.
- to make or issue a challenge.
- (of hounds) to cry or give tongue on picking up the scent.
- 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.