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鏡映 (きょうえい) Japanese meaning | Kotomora

鏡きょう映えい

きょ

う

え

い

Meanings

1

noun

mathematics

Mathematical term for a mirror reflection, often in geometry or group theory.

鏡きょう映えい変へん換かんは図ず形けいを対たい称しょう移い動どうさせる。
A reflection transformation moves a figure symmetrically.

Kanji

鏡mirror, speculum, barrel-head
映reflect, reflection, projection

Similar words

反はん射しゃ
反射 is the general word for reflection (light, sound, etc.) and also a physiological reflex. 鏡映 is specifically a mathematical mirror reflection.

Etymology

Compound of 鏡 (mirror) and 映 (reflect/project). The exact historical derivation is uncertain, but the spelling is conventionally associated with the mathematical sense of mirror reflection.