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Kotomora

宙

mid-air, air, space, sky, memorization, interval of time

JLPTN2StatusJōyō · grade 6FrequencyTop 2,000Strokes8

Readings

On'yomi

  • チュウ

Kun'yomi

—

Nanori

  • ひろ
  • ゆ

Meaning

宙 centers on the open expanse above and around us: the sky, mid-air, or outer space. The sense of an interval of time comes from the idea of a stretch or span, and memorization is a rare extended use related to holding something in mental space.

Most common words using 宙

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Study

Etymology

宙 combines 宀 (roof) and 由 (origin, reason). The historical development is uncertain, but the character likely expresses the idea of space under a roof or a defined expanse.

Meaning mnemonic

Under a roof 宀, there is a reason 由 to look up: the vast space of the sky and mid-air. Imagine standing in a room and seeing the open sky through a skylight.

Reading mnemonic

For チュウ, picture a huge open space where you can chew gum while floating in mid-air: chew -> チュウ, and the sky is so big you can chew forever.