Definition of proton

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  • proton is a valid Scrabble US word with a point value of 8
  • proton is a valid Scrabble UK word with a point value of 8
  • proton is a valid Words with friends word with a point value of 10

Definition of proton

  • a stable particle with positive charge equal to the negative charge of an electron (noun)

See definition of proton in Merriam Webster