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

Click anywhere to start. This is a simple tool to measure your reaction time. The average (median) reaction time is 273 milliseconds, according to the data collected so far. In addition to …

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

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 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.

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 …

Oct 10, 2025 · A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. Substances …

Oct 8, 2025 · reaction (plural reactions) An action or statement in response to a stimulus or other event.

Synonyms for REACTION: response, answer, take, reply, backlash, reflex, revulsion, recoil; Antonyms of REACTION: action, effect, behavior, cause

REACTION meaning: 1. something you say, feel, or do because of something that has happened: 2. the ability to move…. Learn more.