noun
superphosphate
Chemical term for an acid phosphate, especially calcium superphosphate used as fertilizer.
過リン酸石灰は肥料として広く使われている。
Calcium superphosphate is widely used as a fertilizer.
Compound of 過 (ka, 'excess/per-') + リン酸 (rinsan, 'phosphoric acid'), calqued from English 'superphosphate'.