adj annihilated.
2. annihilate ·vt to reduce to nothing or nonexistence; to destroy the existence of; to cause to cease to be.
3. annihilate ·vt to destroy the form or peculiar distinctive properties of, so that the specific thing no longer exists; as, to annihilate a forest by cutting down the trees.
4. annihilate ·vt to destroy or eradicate, as a property or attribute of a thing; to make of no effect; to destroy the force, ·etc., of; as, to annihilate an argument, law, rights, goodness.