ca abbr.
circa
Ca
The symbol for the element calcium.
CA abbr.
cancer
carcinoma
C.A. chronologic age
cytosine arabinoside
Ca The symbol for calcium. |
calcium (kāl'sē-əm) Symbol Ca A silvery-white, moderately hard metallic element of the alkaline-earth group that occurs in limestone and gypsum. It is a basic component of leaves, bones, teeth, and shells, and is essential for the normal growth and development of most animals and plants. Calcium is used to make plaster, cement, and alloys. Atomic number 20; atomic weight 40.08; melting point 842 to 848°C; boiling point 1,487°C; specific gravity 1.55; valence 2. See Periodic Table. |
networking
The country code for Canada.
(1995-04-19)