押し出す
解説 Definition
圧力をかけて、素材などを狭い開口部から外へ押し出す。特に、金型を通して素材を成形することをいう。
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.
使い方 Usage
使い分け Common distinctions
- protrude は物が「突き出ている」こと、extrude は力をかけて物を「押し出す」ことに焦点があります。 Protrude focuses on something sticking out; extrude focuses on forcing something outward.
覚え方のコツ Memory Tip
exit や export と同じ ex-「外へ」を手掛かりに、素材を外へ押し出す姿を思い浮かべましょう。protrude「突き出る」や intrude「入り込む」と、向きの違いで結びつけると覚えやすくなります。
Use ex-, as in exit and export, as a cue for out. Picture material being pushed outward. Connect extrude with protrude and intrude by noticing their different directions.
例文
The machine extrudes plastic through a die.
その機械はプラスチックを金型に通して押し出す。
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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