challenge (redirected from challenger)

challenge /chal·lenge/ (chal´enj)

1. to administer a substance to monitor for the normal physiological response.

2. in immunology, to administer an antigen to monitor the response in a sensitized person.

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challenge,

n a stimulating or de-manding circumstance. To develop effective problem-solving skills and strategies, it is necessary to perceive such circumstance as inconvenience or burden instead of overwhelming impediments.

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challenge Immunology The administration of an antigen or allergen to a person who has been previously exposed to the antigen, specifically to evoke an immune response