calcium
The chemical element (symbol Ca) with atomic number 20: a soft, silvery-white alkaline earth metal which occurs naturally as carbonate in limestone and as silicate in many rocks.
Other meanings
An atom of this element.
A kind of
- metallic element
Word history
From Latin "calx" (lime, limestone).
Where this comes from
This definition is adapted from “calcium” on Wiktionary, by its contributors; related-word lists use Open English WordNet (CC BY 4.0, based on Princeton WordNet), published under CC BY-SA 4.0. This page is published under the same licence.