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

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. …

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

The meaning of REACT is to exert a reciprocal or counteracting force or influence —often used with on or upon. How to use react in a sentence.

Knowing your reaction time is an important part of your life and can be used to measure your alertness, quick thinking, and overall physical performance. It can be used in a variety of ways, …

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

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 …

Dec 4, 2025 · reaction (plural reactions) An action or statement in response to a stimulus or other event.

REACTION meaning: 1 : the way someone acts or feels in response to something that happens, is said, etc.; 2 : an action or attitude that shows disagreement with or disapproval of someone …

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.