What does annihilate mean?
The definition of annihilate
An*ni”hi*late, v. t.
[imp. & p. p. Annihilated; p. pr. & vb. n.Annihilating.]
Etym: [L. annihilare; ad + nihilum, nihil, nothing, ne hilum (filum) not a thread, nothing at all. Cf. File, a row.]

1 To reduce to nothing or nonexistence; to destroy the existence of; to cause to cease to be. It impossible for any body to be utterly annihilated. Bacon.
2 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. “To annihilate the army.” Macaulay.
3 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.

An*ni”hi*late, a.
Anhilated. [Archaic] Swift.