stoichiometric

/ˌstɔɪkiəˈmɛtrɪk/
adjective
  1. Relating to the exact proportional relationship between reactants and products in a chemical reaction, especially in terms of the amounts of substances involved.
    • In a stoichiometric combustion engine, the fuel and air are perfectly balanced for efficient burning.
    • The chemist calculated the stoichiometric ratios needed to produce the desired compound without leftover reactants.
    • The lab technician prepared a stoichiometric mixture of hydrogen and oxygen to ensure a complete reaction.
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