Definition of Expressio unius est exclusio alterius
A maxim of statutory interpretation meaning that the expression of one thing is the exclusion of another. Burgin v. Forbes, 293 Ky. 456, 169 S.W.2d 321, 325; Newblock v. Bowles, 170 Okl. 487, 40 P.2d 1097, 1100. Mention of one thing implies exclusion of another. When certain persons or things are specified in a law, contract, or will, an intention to exclude all others from its operation may be inferred. Under this maxim, if statute specifies one exception to a general rule or assumes to specify the effects of a certain provision, other exceptions or effects are excluded.
That's the definition of Expressio unius est exclusio alterius in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.
