<p><strong>Noun</strong></p><ul><li>The state of being completely forgotten or unknown: a former movie star now in oblivion.</li><li>The state of forgetting or of being oblivious: the oblivion of sleep.</li><li>The act or process of dying out; complete annihilation or extinction: If we don't preserve their habitat, the entire species will pass into oblivion.</li><li>Archaic. Official disregard or overlooking of offenses; pardon; amnesty.</li></ul>