1. The 3rd letter of the Greek alphabet
   "Gamma rays are named after this Greek letter"
    
2. A unit of magnetic field strength equal to one-hundred-thousandth of an oersted
   "The geologist used a magnetometer to measure variations in gamma"

Derived forms: gammas

Type of: alphabetic character, field strength unit, letter, letter of the alphabet

Part of: Greek alphabet, oersted

Encyclopedia: Gamma, Missouri