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Synonyms
an·ni·hi·late (ə-nī́ə-lāt́)

[Late Latin annihilāre, annihilāt-, Latin ad-, ad-, + Latin nihil, nothing.]

verb: -lat·ed, -lat·ing, -lates. 

transitive verb 

    1. To destroy completely: The naval force was annihilated during the attack.
    2. To reduce to nonexistence.
    3. 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.

derivatives

an·níhi·la·biĺi·ty
noun
an·níhi·la·ble
adjective
an·níhi·látor
noun