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vivisection viv·i·sec·tion (vĭv'ĭ-sěk'shən, vĭv'ĭ-sěk'-)
The act or practice of cutting into or otherwise injuring living animals, especially for the purpose of scientific research.
The cutting up or dissection of animals, including anesthetized live animals, in scientific research. Vivisection is also a general term for the use of animals as subjects in laboratory experiments, especially in the development of new medical techniques and drugs.
Note: Vivisection, as well as the general use of animals in medical research, is a target of protest by animal rights advocates.