What does the name Lex mean? The meaning of the name Lex is Diminutive Form Of Alexander Or Alexis. The origin of the name Lex is English. This is the culture in which the name originated, or in the case of a word, the language.
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Name Notes: Diminutive name for Alexis or Alexander. Lex Luthor, nemesis of comic Superman. Lex Barker, actor.