corpus vile

noun plural corpora vilia (ˈkɔːpərə ˈvɪlɪə)

a person or thing fit only to be the object of an experiment

Word Origin

literally: worthless body

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012