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凸透鏡

简凸透镜 · 繁凸透鏡

Mandarin · pinyin tū tòu jìng

convex lens

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Characters in this entry

凸: tū · protrude, bulge out, convex
透: tòu · penetrate, pass through
鏡: Look up this written character
镜: jìng · mirror; lens; glass; glasses

Written characters and their own readings; the entry’s pronunciation is shown above.

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Mandarin tones

1–4–4 · tu1 tou4 jing4

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Read this spelling in Classical texts

Follow a written form into the eight pinned witnesses: Analects, Mencius, Laozi, Zhuangzi, Xunzi, Han Feizi, Sunzi and the Mao Shijing. A match is a place to investigate; it does not prove that a modern dictionary sense fits the passage.

凸透鏡 · find source passages ↗ · 凸透镜 · find source passages ↗

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Compare dictionary sources Wiktionary · 1 sense · 1 Cantonese reading

Rime Cantonese 粵拼

dat6 tau3 geng3

Cantonese word readings for 凸透鏡. This lexicon supplies readings, not definitions.

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Wiktionary English definitions · Chinese section

Independent source senses for this spelling, with usage labels retained. Not matched to the pronunciation above.

noun

(physics) convex lens

Source page · dump 2026-09-02 · Contributors & history

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