Definition of knockout
1a : the act of knocking out : the condition of being knocked outb (1) : the termination of a boxing match when one boxer has been knocked down and is unable to rise and resume boxing within a specified time (2) : technical knockoutc : a blow that knocks out an opponent
2 : a sensationally striking, appealing, or attractive person or thing
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1887
First Known Use of knockout
1887
knockout
Definition of knockout
1 : causing a knockout a knockout blow
2 : sensationally striking, appealing, or attractive a knockout dress
3 : having all or part of a gene eliminated or inactivated by genetic engineering knockout mice predisposed to diabetes mellitus
1818
First Known Use of knockout
1818
Medical Dictionary
knockout
playMedical Definition of knockout
: having all or part of a gene eliminated or inactivated by genetic engineering knockout mice predisposed to diabetes mellitus serve as animal models in the study of human diabetes
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