ANNIHILATE

verb (-lated; -lating) see: nil Date: 1525 transitive verb 1. to cause to be of no effect ; nullify , to destroy the substance or force of, to regard as of no consequence, to cause to cease to exist, 4. to destroy a considerable part of , to cause (a particle and its antiparticle) to vanish by annihilating, intransitive verb to vanish or cease to exist by coming together and changing into other forms of energy (as photons), annihilation noun annihilator noun annihilatory adjective