flatworm
Any of very many parasitic or free-living worms, of the phylum Platyhelminthes, having a flattened body with no skeleton or body cavity.
Noun
- Any of very many parasitic or free-living worms, of the phylum Platyhelminthes, having a flattened body with no skeleton or body cavity.
Synonyms: platyhelminth
Origin
From flat + worm, a calque of taxonomic name Platyhelminthes.