noun
superphosphate
Rare technical term in chemistry; refers to a salt of superphosphoric acid. Often encountered in older or specialized contexts.
See also: 過燐酸
過燐酸塩は肥料の成分として使われることがある。
Superphosphate is sometimes used as a component of fertilizers.
過燐酸 is the acid (superphosphoric acid), while 過燐酸塩 is its salt.
Compound of 過 (per-, excess) + 燐酸 (phosphoric acid) + 塩 (salt). The exact historical derivation is uncertain; the spelling is conventionally associated with the chemical meaning.