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Reaction
01
an action, thought, or feeling in response to something that has happened
Examples
Her immediate reaction to the news was one of disbelief.
The team 's victory elicited a joyful reaction from their fans.
02
(chemistry) a process in which several chemicals combine and form different substances
Examples
The reaction between hydrogen and oxygen produces water.
A catalyst speeds up a chemical reaction without being consumed.
03
an idea evoked by some experience
04
the way one's body responds to a drug, chemical substance, etc.
Examples
The patient had an allergic reaction to the new medication.
His skin showed a severe reaction to the chemical exposure.
05
doing something in opposition to another way of doing it that you don't like
06
extreme conservatism in political or social matters
07
(mechanics) the equal and opposite force exerted by a body in response to an applied force, as described by Newton's Third Law of Motion
Examples
When you push a wall, the reaction force from the wall pushes back equally.
The rocket 's thrust is the reaction to the expulsion of exhaust gases downward.
Lexical Tree
overreaction
reactionism
reaction
action
act
