[{"Bold_text": "noun", "List Items": ["an act or instance of annihilating ,or of completely destroying or defeating someone or something:the brutal annihilation of millions of people.", "the state of being annihilated; total destruction; extinction :fear of nuclear annihilation.", "Physics.Also calledpair annihilation.the process in which a particle and antiparticle unite, annihilate each other, and produce one or more photons.Compare positronium .the conversion of rest mass into energy in the form of electromagnetic radiation electromagnetic radiation.", "Also calledpair annihilation.the process in which a particle and antiparticle unite, annihilate each other, and produce one or more photons.Compare positronium .", "the conversion of rest mass into energy in the form of electromagnetic radiation electromagnetic radiation."]}]