noun
diphosphoric acid
A chemical compound; used in biochemistry and industrial contexts. The term is technical and domain-specific.
二リン酸は生体内のエネルギー代謝に関与している。
Diphosphoric acid is involved in energy metabolism in living organisms.
Compound of 二 (ni, 'two') + リン (rin, 'phosphorus') + 酸 (san, 'acid'). The exact historical derivation is uncertain, but the term follows standard chemical naming conventions.