noun, plural a·li·as·es.
- a false name used to conceal one’s identity; an assumed name: The police files indicate that “Smith” is an alias for Simpson.
- at another time; in another place; in other circumstances; otherwise. “Simpson alias Smith” means that Simpson in other circumstances has called himself Smith.
- otherwise called; alias.
- at another time or place known as or namedDylan, alias Zimmerman
noun plural -ases
- an assumed name
mid-15c., “otherwise called,” from Latin alias “at another time, in another way,” from alius “(an)other,” from PIE *al- “beyond” (cf. Sanskrit anya “other, different,” Avestan anya-, Armenian ail, Greek allos “another,” Gothic aljis “other,” Old English elles “otherwise, else,” Modern English else).
“assumed name,” c.1600, from alias (adv.).