flatworm(redirected from Platyelmia)
Also found in: Thesaurus, Medical, Encyclopedia.
Any of various parasitic and nonparasitic worms of the phylum Platyhelminthes, such as a tapeworm or a planarian, characteristically having a soft, flat, bilaterally symmetrical body and no body cavity. Also called platyhelminth.
(Animals) any parasitic or free-living invertebrate of the phylum Platyhelminthes, including planarians, flukes, and tapeworms, having a flattened body with no circulatory system and only one opening to the intestine
plat•y•hel•minth(ˌplæt ɪˈhɛl mɪnθ)
any of various unsegmented worms of the phylum Platyhelminthes, with a soft, flattened body, including the tapeworm, planarian, and trematode. Also called flatworm.
Any of various worms having a flat, unsegmented body that is bilaterally symmetrical. Many flatworms, such as the tapeworm, are parasites. Also called platyhelminth.
Switch to new thesaurus
|Noun||1.||flatworm - parasitic or free-living worms having a flattened body|
flame cell - organ of excretion in flatworms
worm - any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae
planaria, planarian - free-swimming mostly freshwater flatworms; popular in laboratory studies for the ability to regenerate lost parts
trematode, trematode worm, fluke - parasitic flatworms having external suckers for attaching to a host