Dictionary
ex•on
Pronunciation: (ek'son), [key]—
n.
(in Britain) one of four yeomen of the guard who act as commanding officers in the absence of higher authority. Also called
exempt. ex•on
Pronunciation: (ek'son), [key]—
n. Genetics.
any portion of an interrupted gene that is represented in the RNA product and is translated into protein. Cf.
intron.Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.