Noun | 1. | ![]() animal kingdom, Animalia, kingdom Animalia - taxonomic kingdom comprising all living or extinct animals bladder worm - encysted saclike larva of the tapeworm flatworm, platyhelminth - parasitic or free-living worms having a flattened body class Turbellaria, Turbellaria - free-living flatworms class Trematoda, Trematoda - parasitic flatworms (including flukes) Cestoda, class Cestoda - tapeworms phylum - (biology) the major taxonomic group of animals and plants; contains classes |