Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A naturally-occurring radioactive isotope of calcium, 4820Ca, having twenty protons and twenty-eight neutrons, and a half-life of 4.3x1019 years

Etymologies

Sorry, no etymologies found.

Examples

Wordnik is becoming a not-for-profit! Read our announcement here.

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.