noun🔗ShareكالسيومThe 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."My doctor recommended I take a calcium supplement to strengthen my bones. "أوصى طبيبي بتناول مكمل الكالسيوم لتقوية عظامي.elementchemistrysubstancematerialscienceChat with AIVocabulary GamePractice Reading
noun🔗Shareذرة هذا العنصرAn atom of this element."The scientist studied the calcium atom's structure in the lab. "درس العالم بنية ذرة الكالسيوم في المختبر.elementchemistrymineralsubstanceChat with AIVocabulary GamePractice Reading
