beaker
ビーカー
解説 Definition
beaker は実験で液体を入れたり混ぜたりする「ビーカー」という意味です。日本語のカタカナ語とほぼ同じですが、日常のコップではなく、主に実験器具を指します。
A beaker is a wide, usually cylindrical laboratory container with an open top and often a pouring lip. It is used for holding, mixing, or heating liquids, but its markings generally provide only approximate measurements.
覚え方のコツ Memory Tip
beaker は実験室で液体を入れ、混ぜ、加熱する広口で円筒形の容器です。a glass beaker、pour water into a beaker、heat the liquid in a beaker という組み合わせで覚えます。目盛りがあっても精密な計量器とは限らず、細い首を持つ flask や正確に量る graduated cylinder と区別します。
Picture a laboratory bench with a wide glass container holding liquid: that is a beaker. Learn it through common combinations such as a glass beaker, pour water into the beaker, and heat the liquid in a beaker. Its broad opening makes adding and mixing substances convenient. Contrast it with a flask, which usually narrows at the neck, and with a graduated cylinder, which is designed for more accurate volume measurement. Although many beakers have marked lines, those markings normally indicate approximate rather than highly precise amounts.
例文
The student poured water into the beaker.
生徒はビーカーに水を注ぎました。
A glass beaker was placed on the lab table.
ガラスのビーカーが実験台に置かれていました。
Please heat the liquid in this beaker carefully.
このビーカーの中の液体を注意して温めてください。
beaker の類義語・関連語
beaker の語源・成り立ち Etymology
中英語 beker は古ノルド語 bikarr や中世オランダ語 beker を経て、中世ラテン語 bicarium にさかのぼるとされる。もともと「杯・広口の器」だったため、その形のまま実験用ガラス器具を指して beaker「ビーカー」になった。関連語は Dutch beker, German Becher。
English beaker developed from Middle English beker, a word for a drinking vessel or broad cup. It is related to forms such as Dutch beker and German Becher and is generally traced through Germanic and medieval Latin forms, including bicarium. Because the original word denoted a wide drinking vessel, it was naturally extended to the similarly shaped open laboratory container now commonly called a beaker.
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