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an·ti·par·ti·cle
 antiparticle
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- pronunciation:
- aen
ti
par
tih
k
 l
- features:
- Word Combinations (noun)
| part of speech: |
noun |
| definition: |
in physics, either of two subatomic particles that have the same mass, spin, degree of charge, and magnetic moment but that have opposite signs of charge and directions of magnetic moment and whose collision causes mutual annihilation.
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