zo·o·phyte (z???-f?t?)n. An invertebrate animal, such as a sea anemone or a sponge, that superficially resembles a plant. Not in scientific use.zo?o·phyt?ic (-f?t??k), zo?o·phyt?i·cal (-?-k?l) adj.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.