Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Previous word: calcitration
Next word: calcium carbide
Definition of: calcium
Our photo definition of calcium 
(kal′sē·əm) noun
An abundant, silvery-white metallic element (symbol Ca, atomic number 20) belonging to the alkaline-earth group and forming an essential constituent of living organisms. See PERIODIC TABLE. [<L calx lime]
Comment about this word, ask questions, or add new information about this topic: