plastics
プラスチック
解説 Definition
plastics は plastic（プラスチック、プラスチック製品）の複数形です。素材の種類や複数のプラスチック製品をまとめて言うときに使われます。
Plastics are different types of synthetic or partly synthetic materials that can be shaped, especially by heat or pressure, or objects made from such materials. The plural often emphasizes several varieties, categories, or groups of plastic products.
覚え方のコツ Memory Tip
plastics は plastic の規則的な複数形で、語尾に -s を加え、最後は /s/ と発音します。素材一般なら不可算の plastic が普通ですが、different plastics は「異なる種類のプラスチック」、recycle plastics は複数種・製品群を表します。「形作れる」という語源を成形材料の性質と結び付けましょう。
Plastics is the regular plural of plastic, with a final -s pronounced /s/. The singular or uncountable form plastic often names the material in general, while plastics commonly points to different types of material or groups of plastic products. Compare Plastic is widely used with These plastics are light and strong. The historical idea behind plastic is “capable of being shaped,” which matches materials molded by heat or pressure. Useful combinations include engineering plastics, recycled plastics, and plastics for cars. Let the plural signal categories or varieties rather than one undivided material.
例文
These plastics are light and strong.
これらのプラスチックは軽くて丈夫です。
The factory makes plastics for cars.
その工場は車用のプラスチック製品を作っています。
Some plastics can be recycled many times.
何度もリサイクルできるプラスチックもあります。
plastics の類義語・関連語
類義語
派生語
plastics の語源・成り立ち Etymology
plastics は plastic の複数形で、plastic はギリシャ語 plastikos「形作るのに適した」に由来します。さらに語根は plassein「こねて形を作る」で、熱や圧力で自在に成形できる材料だから「プラスチック」と呼ばれるのです。関連語は plasma, plasticity。
Plastics is the plural of plastic, formed by adding -s. Plastic comes through Latin plasticus from Greek plastikos, meaning fit for molding or capable of being shaped. That adjective is related to plassein, “to mold or form.” The material sense developed because these substances can be shaped under heat, pressure, or other manufacturing conditions. The plural plastics is now used especially for multiple kinds of such material or for the industry and products collectively.
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