ipso facto

Adv.

1.

ipso facto - by the fact itself; "ipso facto, her innocence was established"

IPSO FACTO. By the fact itself.
     2. This phrase is frequently employed to convey the idea that something which has been done contrary to law is void. For example, if a married man, during the life of his wife, of which he had knowledge, should marry another woman, the latter marriage would be void ipso facto; that is, on that fact being proved, the second marriage would be declared void ab initio.