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  1. REACTION Definition & Meaning - Merriam-Webster

    The meaning of REACTION is the act or process or an instance of reacting. How to use reaction in a sentence.

  2. REACTION Definition & Meaning | Dictionary.com

    Chemical reactions are caused by electrons of one substance interacting with those of another. The reaction of an acid with a base, for example, results in the creation of a salt and water. …

  3. REACTION | English meaning - Cambridge Dictionary

    A chemical reaction is the change that happens when two or more substances are mixed with each other.

  4. reaction - Wiktionary, the free dictionary

    1 day ago · reaction (plural reactions) An action or statement in response to a stimulus or other event.

  5. Reaction (physics) - Wikipedia

    The attribution of which of the two forces is the action and which is the reaction is arbitrary. Either of the two can be considered the action, while the other is its associated reaction.

  6. REACTION definition and meaning | Collins English Dictionary

    Your reaction to something that has happened or something that you have experienced is what you feel, say, or do because of it.

  7. Reaction - Definition, Meaning & Synonyms | Vocabulary.com

    A reaction is an action taken in response to something. If you're telling your parents that you want to move out, you'll see by their reaction that they're sad about it.

  8. Reaction - definition of reaction by The Free Dictionary

    Usage: Reaction is used to refer both to an instant response (her reaction was one of amazement) and to a considered response in the form of a statement (the Minister gave his …

  9. reaction - WordReference.com Dictionary of English

    Reaction is used to refer both to an instant response (her reaction was one of amazement) and to a considered response in the form of a statement (the Minister gave his reaction to the court's …

  10. What Is a Chemical Reaction? Types and Examples Explained

    Apr 26, 2025 · A reaction is more than just a change; it is a chemical change. Unlike physical changes, which might alter a material’s appearance (like melting ice into water) without …