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Browse the Medical Dictionary:: A; B; C; D; E; F; G; H; I; J; K; L; M; N; O; P; Q; R; S; T; U; V; W; X; Y; Z; #

challenge

Main Entry: ¹chal·lenge

Pronunciation: \ˈchal-ənj\

Function: transitive verb

Inflected Form(s): chal·lenged; chal·leng·ing

: to administer a physiological and especially an immunologic challenge to (an organism or cell)

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