cephalopod
頭足類
解説 Definition
複数の腕を持つ軟体動物。タコやイカを含むグループ。
A cephalopod is a sea animal such as an octopus, squid, or cuttlefish. These animals have soft bodies, arms or tentacles, and are known for being intelligent and active hunters. The word is mainly used in biology and zoology.
覚え方のコツ Memory Tip
`-pod` は `tripod` や `podiatry` で見かける「足」系の形、`cephalo-` は `cephalic` などの「頭」系とまとまりで覚えると残りやすい語です。つまり cephalopod は「頭のところから足のような腕が出ている生き物」という形そのものを思い浮かべると定着しやすいです。`octopus` や `squid` の個別名ではなく、それらをまとめる少しかたい上位カテゴリ名。`gastropod`（腹足類）と部品の違いで見分けると混同しにくいです。
Break it into `cephalo-` and `-pod`: `cephalo-` is about the head, and `-pod` appears in words about feet or legs, like `tripod`. That makes a strong picture: a creature whose leg-like arms come from the head area. It helps to remember that this is a group name, like for `octopus` and `squid`, not just one animal.
例文
Cephalopod intelligence rivals that of mammals.
頭足類の知能は哺乳動物と同等です。
Most cephalopods possess remarkable intelligence and problem-solving skills.
ほとんどの頭足類は優れた知能と問題解決能力を持っています。
Cephalopod camouflage abilities are remarkable.
頭足類のカモフラージュ能力は注目に値する。
cephalopod の類義語・関連語
cephalopod の語源・成り立ち Etymology
ギリシャ語 kephale「頭」＋ pous/pod-「足」から来た語で、直訳は「頭足のもの」です。腕や触手が頭部から伸びるイカ・タコの姿をそのまま表し、関連語に cephalic「頭の」や podiatry「足病学」があります。
Cephalopod comes from Greek kephale, meaning "head," and pous/pod-, meaning "foot." Its literal sense is "head-foot," describing animals whose arms or tentacles seem to grow from the head area. The word was built to match their body form very directly. Related English words include cephalic and podiatry.
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