歯のある
解説 Definition
toothed は、歯や歯状の突起を持つことを表す形容詞です。歯車や刃の突起、葉の縁のぎざぎざなどにも使います。
Toothed describes something that has teeth or a row of toothlike projections. It is used for objects such as gears and blades, and for natural structures such as leaves whose edges have small, regular points.
使い方 Usage
使い分け Common distinctions
- toothy は、歯が目立つ人や歯を見せた笑顔を表すことが多く、歯車や葉の形を表す toothed とは使い方が異なります。 Toothy often describes a person with prominent teeth or a smile showing teeth. Its use differs from toothed for the shape of gears or leaves.
覚え方のコツ Memory Tip
tooth「歯」に「〜を備えた」を表す -ed が付いた形容詞。歯のような突起が並ぶ形を思い浮かべましょう。発音は /tuːθt/ で、語尾の -ed は /t/ です。
Toothed combines tooth with the adjective-forming -ed, meaning “provided with.” Picture a row of toothlike projections. It is pronounced /tuːθt/, with -ed pronounced /t/ rather than as a separate syllable.
例文
The machine uses a toothed wheel to move the belt.
その機械はベルトを動かすために歯のある車輪を使っている。
This plant has small toothed leaves.
この植物には小さなぎざぎざの葉がある。
toothed の類義語・関連語
toothed の語源・成り立ち Etymology
古英語の「tōþ（歯）」に形容詞化接尾辞「-ed（～を備えた）」が結合した単語です。印欧祖語語根*dent-（歯）に由来し、語尾の-edが「性質を有する」状態を表すため「歯や突起がある」と直感的に理解できます。関連語に「dental（歯の）」や「dentate（歯状の）」があります。
Toothed combines tooth with the suffix -ed in its “having or provided with” function. Tooth comes from Old English tōþ and belongs to an ancient Germanic word family. Its deeper Indo-European history is related to the root also represented in Latin dens and English words such as dental, though the Germanic form developed through different sound changes. In toothed, the meaning extends readily from actual teeth to regularly spaced projections on blades, wheels, tools, and leaf margins.
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