The γ symbol has the meaning Greek Small Letter Gamma. It belongs to the category Greek Symbols. Here is the third letter of the Greek alphabet. The symbol is very similar to the Latin letter y. The gamma symbol is currently used in geometry to denote an angle. But it is also used in physics as a sign of gamma radiation. You can copy the gamma character by clicking on the copy button below. An example of application of the sign of gamma would be: “The angle γ is 90 ° and therefore a right angle.”