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Meaning of gamma

gam•ma

Pronunciation: (gam'u), [key]
— n.
  1. the third letter of the Greek alphabet (&Ggr;, &ggr;).
  2. the consonant sound represented by this letter.
  3. the third in a series of items.
  4. (cap.)a star that is usually the third brightest of a constellation: The third brightest star in the Southern Cross is Gamma Crucis.
  5. a unit of weight equal to one microgram.
  6. a unit of magnetic field strength, equal to 10− gauss.
  7. a measure of the degree of development of a negative or print.
  8. an analogous numerical indication of the degree of contrast between light and dark in the reproduction of an image in television.
  9. a grade showing that an individual student is in the third, or lowest, of three scholastic sections in a class. Cf. alpha (def. 7),(def. 8).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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