VIVISECTION
vivisection
(noun) the act of operating on living animals (especially in scientific research)
Source: WordNet® 3.1
Etymology
Noun
vivisection (countable and uncountable, plural vivisections)
The action of cutting, surgery or other invasive treatment of a living organism for the purposes of physiological or pathological scientific investigation.
Source: Wiktionary
Viv`i*sec"tion, n. Etym: [L. vivus alive + E. section: cf. F.
vivisection. See Vivid, and Section.]
Definition: The dissection of an animal while alive, for the purpose of
making physiological investigations.
Source: Webster’s Unabridged Dictionary 1913 Edition