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Kotomora

鈾

Uranium (element)

Strokes13

Readings

On'yomi

  • チュウ
  • ユウ

Kun'yomi

  • ウラニウム

Meaning

鈾 centers on the metallic element uranium. It is a specialized character for this chemical element, with no broader conceptual extensions.

Study

Etymology

鈾 is a modern coined character for uranium, combining the metal radical 金 with the phonetic 由 (チュウ/ユウ). It was created to represent the element in Chinese and later adopted into Japanese.

Meaning mnemonic

The left side 金 means metal, and the right side 由 looks like a container. Picture a heavy metal container holding radioactive uranium.

Reading mnemonic

For チュウ, imagine a metal chew toy made of uranium: chew -> チュウ, but don't actually chew it!