Definitions from Wiktionary ( )

▸ verb:  To reduce to nothing, to destroy, to eradicate.
▸ verb:  (particle physics) To react with antimatter, producing gamma radiation and (for higher-mass reactants, especially composite particles such as protons) lighter particles (such as pions, muons, and neutrinos).
▸ verb:  (archaic) To treat as worthless, to vilify.
▸ verb:  (transitive) To render null and void; to abrogate.

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