0 Talk Calcium Edit History ELEMENT calcium Symbol(Terran) Ca Atomic number 20 Calcium is a chemical element. The bones of many humanoid species are composed largely of calcium. (DS9 novel: Devil in the Sky) ConnectionsEdit Calcium article at Memory Alpha, the wiki for canon Star Trek. Calcium article at Wikipedia, the free encyclopedia. Read more Dikironium is an element that by the 23rd century, could only be created inside a laboratory and... Dikironium Nitrogen is a chemical element. Nitrogen, as a gas, can commonly be found in the atmospheres of... Nitrogen Rodinium (also spelled rhodinium, abbreviated Ro) was a chemical element, a transuranic metal.... Rodinium Related Categories Category: Elements Add category