1a. To destroy completely: The naval force was annihilated during the attack.b. To reduce to nonexistence. c. To defeat decisively; vanquish. 2. To nullify or render void; abolish.
INTRANSITIVE VERB:
Physics To participate in annihilation, as an electron and a positron do.
ETYMOLOGY:
Late Latin annihilre, annihilt- : Latin ad-, ad- + Latin nihil, nothing; see ne in Appendix I.
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