Definition of 亜砒酸 (あひさん)

noun
1.
arsenious acid, arsenous acid (H3AsO3)
2.
arsenic trioxide, white arsenic (As2O3)(colloquialism)
Other readings:
亜ヒ酸【あヒさん】
Related Kanji
Asia, rank next, come after, -ous
arsenic
acid, bitterness, sour, tart