膨張する
解説 Definition
inflating は inflate（膨らませる、膨張する）の現在分詞・動名詞です。風船やタイヤなどに空気を入れる場合や、数値・価格などが膨らむ場合に使われます。
The present participle or gerund of inflate, describing the act of filling something with air or gas so that it expands. It can also describe causing prices, costs, figures, or estimates to become artificially or substantially larger.
覚え方のコツ Memory Tip
原形 inflate「空気を入れて膨らませる」の黙字 e を取って -ing を付けた形で、発音は /ɪnˈfleɪtɪŋ/。in-「中へ」と「吹く」に由来する要素から、風船の中へ空気を吹き込む像を作りましょう。inflating a balloon のほか、inflating costs のような比喩にも使います。
Link inflating to inflate, “to fill with air or make larger.” The final silent e is dropped before -ing, producing inflating, pronounced /ɪnˈfleɪtɪŋ/. Its historical parts suggest blowing inward, so picture air entering a balloon or tire and making it expand. Then extend that picture to numbers: rising expenses can be described as inflating a budget, just as air enlarges a balloon. Useful combinations include inflating a balloon, inflating a tire, and inflating prices or costs. The object tells you whether the expansion is physical or figurative.
例文
He is inflating a balloon for the party.
彼はパーティーのために風船を膨らませています。
The mechanic is inflating the front tire.
整備士は前輪のタイヤに空気を入れています。
Rising costs are inflating the project budget.
費用の上昇でプロジェクト予算が膨らんでいます。
inflating の類義語・関連語
inflating の語源・成り立ち Etymology
inflating は inflate の現在分詞で、語源はラテン語 inflare「中へ吹き込んで膨らませる」です。in-「中へ」+ flare「吹く」に分かれるので、「空気を吹き入れてふくらむ」が核の意味だとわかります。関連語は inflation, deflate。
Inflating is the -ing form of inflate, made by dropping the final silent e before adding -ing. Inflate comes from Latin inflare, “to blow into or swell,” formed from in-, meaning “in” or “into,” and flare, meaning “to blow.” The original image is therefore air being blown into an object. English later extended this physical sense to exaggerated figures and increases in prices, costs, or perceived importance.
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