zo·ot·o·my (z?-?t??-m?)n. pl. zo·ot·o·mies 1. The anatomy of animals.2. Dissection of animals.zo?o·tom?ic (z???-t?m??k), zo?o·tom?i·cal (-?-k?l) adj.zo·ot?o·mist n.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.