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消石灰 (shousekkai) Japanese meaning: slaked lime | Kotomora

消しょう石せっ灰かい

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Meanings

1

slaked lime; calcium hydroxide

Technical term for calcium hydroxide, used in construction, agriculture, and water treatment.

消しょう石せっ灰かいは土ど壌じょう改かい良りょうに使つかわれる。

Slaked lime is used for soil improvement.

Kanji

消extinguish, blow out, turn off
石stone
灰ashes, puckery juice, cremate

Don't confuse with

石せっ灰かい
石灰 (quicklime) turns into 消石灰 (slaked lime, calcium hydroxide) once water is added, so the two are different chemical stages learners often mix up.
カルキ
消石灰 (slaked lime) is a different white powdery chemical often confused with カルキ (bleaching powder) because both are used for disinfection and gardening.

Etymology

Compound of 消 (slaking) and 石灰 (lime). The term describes lime that has been slaked with water.