Definition of reactant

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  • reactant is a valid Scrabble US word with a point value of 10
  • reactant is a valid Scrabble UK word with a point value of 10
  • reactant is a valid Words with friends word with a point value of 12

Definition of reactant

  • a chemical substance that is present at the start of a chemical reaction (noun)

See definition of reactant in Merriam Webster