From Longman Dictionary of Contemporary Englishvivisectionviv‧i‧sec‧tion /ˌvɪvəˈsekʃən/ noun [uncountable] HBthe practice of doing medical or scientific tests on live animals —vivisectionist noun [countable]
Examples from the Corpus
vivisection• I'm not against vivisection, but obviously we all want to avoid animals suffering unnecessarily.• Their excursion into the progressive circles of hell is recorded with such precision that the film is like a compelling vivisection experiment.• Has he never heard of vivisection?• Without vivisection many of the recent anti-cancer advanced simply would not have been made.Origin vivisection (1700-1800) Latin vivus “alive” + English section “cutting” 