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Definition of gamma
(Entry 1 of 2)
1 : the 3rd letter of the Greek alphabet — see Alphabet Table
2 : the degree of contrast of a developed photographic image or of a video image
3 : a unit of magnetic flux density equal to one nanotesla
4 : gamma ray gamma counter
5 : microgram
gamma
adjectiveDefinition of gamma (Entry 2 of 2)
1 : of, relating to, or being one of three or more closely related chemical substances
2 : third in position in the structure of an organic molecule from a particular group or atom
—symbol γ
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Time Traveler for gamma
The first known use of gamma was in the 15th century
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