(1):

(v. t.) To reduce to nothing or nonexistence; to destroy the existence of; to cause to cease to be.

(2):

(v. t.) 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.

(3):

(v. t.) 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.

(4):

(a.) Annihilated.