zoochemistry (?z????k?m?str?) n (Biochemistry) the branch of biochemistry that is concerned with the constituents of an animal’s body ?zoo?chemical adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014