空穴

Mandarin · pinyin kòng xué

Meanings

  1. electron hole (physics)
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Characters in this entry

空
kōng · empty, hollow, bare, deserted
穴
xué · cave, den, hole; Kangxi radical 116
Written characters and their own readings; the entry’s pronunciation is shown above.

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Mandarin tones

4–2 · kong4 xue2

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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.

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Compare dictionary sources Wiktionary · 4 senses

Wiktionary English definitions · Chinese section

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

noun

  1. cavity; hole
  2. empty house
  3. (electronics) (positive) hole; cavity
  4. (physics, Mainland China) electron hole

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

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