reaction

47 ENTRIES FOUND:

re·ac·tion

noun \rē-ˈak-shən\

Definition of REACTION

1
: the act or process or an instance of reacting
2
: bodily response to or activity aroused by a stimulus: a : an action induced by vital resistance to another action; especially : the response of tissues to a foreign substance (as an antigen or infective agent) b : depression or exhaustion due to excessive exertion or stimulation c : abnormally heightened activity succeeding depression or shock d : a mental or emotional disorder forming an individual's response to his or her life situation
3
: the force that a body subjected to the action of a force from another body exerts in the opposite direction
4
a (1) : chemical transformation or change : the interaction of chemical entities (2) : the state resulting from such a reaction b : a process involving change in atomic nuclei

Seen & Heard

What made you want to look up reaction? Please tell us where you read or heard it (including the quote, if possible).

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More