Last Updated
：2026/01/11
生石灰
Hiragana
せいせっかい
Noun
Japanese Meaning
生石灰とは、主成分が酸化カルシウム（CaO）である白色または灰白色の塊状・粉末状物質。水と激しく反応して熱を発し、水酸化カルシウムとなる。乾燥剤、除湿剤、土壌改良材、製鋼・製紙など各種工業用途に用いられる。 / 消石灰（＝水酸化カルシウム）と区別される、焼成直後で水分を含まない石灰。
Easy Japanese Meaning
しろくてかたいこなやかたまりで、水にふれるとあつくなり水をすうもの
Chinese (Simplified) Meaning
氧化钙（CaO） / 由石灰石高温煅烧得到的白色或灰白色块状或粉状物 / 强吸湿、遇水放热，用于建筑与干燥剂
Chinese (Traditional) Meaning
氧化鈣 / 未水化的石灰（與熟石灰相對）
Korean Meaning
산화칼슘 / 생석회 / 물과 반응해 열을 내는 석회
Indonesian
kalsium oksida / kapur tohor / kapur bakar
Vietnamese Meaning
vôi sống / ôxít canxi (CaO)
Tagalog Meaning
oksido ng kaltsyum / buhay na apog
Sense（1）
calcium oxide
（ canonical ）
（ romanization ）
（ hiragana ）
Quizzes for review
See correct answer
This factory produces cement, which has calcium oxide as its main component.
This factory produces cement, which has calcium oxide as its main component.
See correct answer
この工場では、生石灰を主成分とするセメントを生産しています。
Japanese - English
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