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Words Kanji Guides About

直径 (ちょっけい) Japanese meaning | Kotomora

直ちょっ径けい

ちょ

っ

け

い

Common wordJLPTN2Freq.FrequencyTop 10,000

Meanings

1

noun

Standard mathematical and everyday term for the diameter of a circle or sphere.

この円えんの直ちょっ径けいは10センチです。
The diameter of this circle is 10 centimeters.
直ちょっ径けいを測はかってください。
Please measure the diameter.

Kanji

直straightaway, honesty, frankness
径diameter, path, method

Similar words

半はん径けい
半径 means 'radius', which is half the diameter.
円えん周しゅう
円周 means 'circumference', the distance around a circle.

Etymology

From 直 (straight) and 径 (path, diameter). The reading ちょっけい is the on'yomi of the kanji.