expressio unius est exclusio alterius
Defined in 3 dictionaries — Case Law, Ballentine's (1916), Black's (1910)
Definitions from Case Law
From 273 U.S. 593 - Ford v. United States · 1927Most cited · 1,180 citing opinions
This maxim properly applies only when in the natural association of ideas in the mind of the reader that which is expressed is so set over by way of strong contrast to that which is omitted that the contrast enforces the affirmative inference that that which is omitted must be intended to have opposite and contrary treatment.
Ballentine's Law Dictionary
James A. Ballentine · 1916
The expression of one thing is the exclusion of another. See 113 Mo. 112, 35 Am. St. Rep. 69ff, 20 S. W. 786.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
The expression of one thing is the exclusion of another. Co. Litt. 210a. The express mention of one thing iperson or place] implies the exclusion of another.