ガスを抜く
解説 Definition
degas は、液体・材料・装置などから溶け込んだガスや閉じ込められたガスを除去することを表す動詞です。
To degas something is to remove dissolved, trapped, or unwanted gas from a liquid, material, or piece of equipment, often to improve purity, quality, or experimental reliability.
覚え方のコツ Memory Tip
de-「取り除く」＋ gas「気体」と分ければ、液体や材料からガスを抜く操作だと分かります。技術文脈では degas process「ガス抜き工程」のように工程名を前置修飾的に使うことがあります。一般には動詞 degas「ガスを除く」や名詞 degassing「ガス抜き」のほうが標準的なので、形の違いも併せて覚えます。
Divide degas into de-, meaning removal or reversal, and gas. The structure gives the practical image directly: gas is taken out of a liquid, material, or system. In technical writing, degas may appear in a label such as degas process or degas cycle, although degas is more commonly a verb and degassing is the usual noun for the operation. Picture dissolved bubbles being removed from oil before a sensitive experiment. Useful related forms are degas the liquid, degassed equipment, and vacuum degassing. This keeps the process meaning separate from merely releasing pressure.
例文
We need to degas the liquid before testing it.
試験する前に、その液体からガスを抜く必要があります。
Technicians degas the vacuum chamber before the experiment.
技術者たちは実験前に真空チャンバーのガス抜きをします。
A vacuum pump helps degas the oil.
真空ポンプは油からガスを抜くのに役立ちます。
degas の類義語・関連語
類義語
対義語
派生語
紛らわしい語
degas の語源・成り立ち Etymology
degas は de-（取り去る）+ gas から成る語で、de- はラテン語系、gas はオランダ語系の gas にさかのぼります。文字どおり「ガスを抜く」で、液体や材料から気体を除く意味。関連語は degassing、gaseous。
Degas is a transparent formation from the prefix de-, expressing removal, and gas. The prefix entered English through Latin and French formations, while gas was coined in early modern Dutch and adopted into English. The literal structure is therefore “remove gas.” In technical usage, the verb refers to extracting dissolved or trapped gases, and the related noun degassing names the process; degas can also occur in process labels.
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