Lex

Lex is a name of Latin and Greek origin, functioning both as an independent given name and as a short form of Alexander, which derives from the Greek Alexandros, meaning defender of men. As a standalone name it also connects to the Latin word lex, meaning law, lending it an association with order and authority. It gained broader cultural familiarity through fictional characters, most notably the comic-book villain Lex Luthor, which helped establish it as a name in its own right. Related forms include Alex, Alexei, and Alexi.