Last Updated
：2025/11/19
calcium
IPA(Pronunciation)
Noun
countable
uncountable
Japanese Meaning
化学元素。原子番号20。柔らかく銀白色のアルカリ土類金属であり、石灰岩中の炭酸塩や多くの岩石中のシリケートとして自然に存在する。
（ plural ）
Quizzes for review
The chemical element (Symbol Ca), with an atomic number 20. It is a soft, silvery-white alkaline earth metal which occurs naturally as carbonate in limestone and as silicate in many rocks.
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calcium
Calcium (Ca), atomic number 20, is a soft, silvery-white alkaline earth metal that commonly occurs as carbonate in limestone and as silicate in many rocks.
See correct answer
Calcium (Ca), atomic number 20, is a soft, silvery-white alkaline earth metal that commonly occurs as carbonate in limestone and as silicate in many rocks.
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