noun
flatworm; platyhelminth
Zoological term for members of the phylum Platyhelminthes. Used in biological contexts.
扁形動物にはプラナリアやサナダムシが含まれる。
Flatworms include planarians and tapeworms.
From 扁形 (flat shape) + 動物 (animal), a calque of the taxonomic name Platyhelminthes (from Greek platys 'flat' + helmins 'worm').