Refers to the soft, white, porous sedimentary rock, often used in contexts like geology, art materials, or historical white pigments.
白亜は、チョークの原料として使われることがある。
Chalk rock is sometimes used as a raw material for chalk sticks.
white wall; whitewashed wall
Refers to a wall coated with white plaster or whitewash, often evoking a clean, bright appearance. Commonly used in literary or descriptive contexts.
白亜の壁が朝日に輝いていた。
The whitewashed wall shone in the morning sun.
古
この崖は白亜でできている。
This cliff is made of chalk.
The white walls of the old church bear the marks of history.
石灰岩 is limestone, a harder rock; 白亜 is specifically soft, white chalk.
Standard kanji spelling; the most common written form.
Variant kanji form using 堊 instead of 亜; rarely used in modern Japanese.
白 (white) + 亜 (a phonetic loan used for its sound, originally meaning 'second' or 'Asia'). The compound is a Sino-Japanese word referring to white chalk or whitewashed surfaces.