🇬🇧 en ja 🇯🇵

ceiling noun

  /ˈsilɪŋ/ , /ˈsiːlɪŋ/
  • (architecture) The overhead interior surface that covers the upper limits of a room.
 天井
  • (mathematics) The smallest integer greater than or equal to a given number.
 天井関数
glass ceiling
ガラスの天井
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