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Definition of: vivisection
(viv′ə·sek′shən) noun
1. The dissection of a living animal.
2. Experimentation on living animals by means of operations designed to promote knowledge of physiological and pathological processes. [<L vivus living, alive + sectio, -onis a cutting. See SECTION.]
—viv′i·sec′tion·al adjective
—viv′i·sec′tion·ist noun & adjective
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