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  1. REACTANT Definition & Meaning - Merriam-Webster

    The meaning of REACTANT is a substance that enters into and is altered in the course of a chemical reaction.

  2. REACTANT | English meaning - Cambridge Dictionary

    Molecules collide and react with each other to form products that can transform back into the initial reactant species.

  3. What Is a Reactant in Chemistry? - ThoughtCo

    Aug 10, 2019 · Reactants are the starting materials in a chemical reaction. Reactants undergo a chemical change in which chemical bonds are broken and new ones formed to make products. …

  4. What is a Reactant? - ChemTalk

    A reactant is a chemical substance that is present at the start of a chemical reaction, and is changed as the chemical reaction proceeds. They could also be referred to as terms like …

  5. REACTANT Definition & Meaning | Dictionary.com

    REACTANT definition: a person or thing that reacts. See examples of reactant used in a sentence.

  6. Definition of reactants - Chemistry Dictionary

    Reactants are substances initially present in a chemical reaction that are consumed during the reaction to make products. Some chemical reactions go to completion, resulting in all of the …

  7. What Is a Reactant in a Chemical Reaction? - Biology Insights

    1 day ago · A reactant is the starting material that initiates a chemical transformation. The Core Definition of a Reactant A reactant is any substance consumed during a chemical reaction to …

  8. reactant noun - Definition, pictures, pronunciation and usage …

    a substance that takes part in and is changed by a chemical reaction. Definition of reactant noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example …

  9. Definition of reactant - Chemistry Dictionary

    Reactants interact with each other during the reaction to form new substances, called products. The term "reactant" is universally applicable across all subfields of chemistry, including organic …

  10. Reactants and Products - CK-12 Foundation

    Jan 1, 2026 · A reactant is a substance that is present at the start of a chemical reaction. The substance (s) to the right of the arrow are called products. A product is a substance that is …