extrude
押し出す
解説 Definition
圧力や力をかけて、ものを外に押し出す。特に金型を通して素材を成形する。
To extrude means to force something out through a narrow opening, often so it comes out in a long shape. It is common in manufacturing, cooking, and biology. The word often suggests pressure shaping the material as it comes out.
覚え方のコツ Memory Tip
ex- は exit や export と同じ「外へ」の感覚。そこに、protrude（突き出る）や intrude（入り込む）に出る -trude 系を重ねると、「力をかけて外へ突き出す」がつかみやすい。日常の push out より、plastic や metal を型に通して成形しながら押し出す工業的な場面でよく使う語。protrude が「物が出っ張る」側なら、extrude は「外へ押し出す」側。extruded aluminum, extrude molten plastic で覚えると定着しやすい。
Start with `ex-`, which often means out, as in `exit` or `export`. Then connect `extrude` with words like `protrude` and `intrude`, which all have the idea of pushing or sticking in a direction. `Extrude` is the version where material is pushed outward, often in factory phrases like `extruded aluminum`.
例文
The machine extrudes plastic through a die.
その機械はプラスチックをダイに通して押し出す。
The process extrudes molten material.
その工程では溶融材料を押し出す。
The extruded product is cooled immediately.
押し出された製品は直ちに冷却される。
extrude の類義語・関連語
紛らわしい語
extrude の語源・成り立ち Etymology
extrude はラテン語 extrudere に由来し、ex-「外へ」+ trudere「押す」で、字義どおり「外へ押し出す」です。protrude や intrude と同根で、力をかけて内側から外へ突き出す感覚が、そのまま現在の意味につながっています。
Extrude comes from Latin extrudere, built from ex- meaning "out" and trudere meaning "push." Its original sense was literally "push out," and that idea stayed clear as the word moved into English. Related words like protrude and intrude share the same root and keep the image of something being driven forward.
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