Medical Dictionary
reactor
noun re·ac·tor \rē-ˈak-tər\
Medical Definition of REACTOR
1
: one that reacts: as a : a chemical reagent b : an individual reacting to a stimulus c : an individual reacting positively to a foreign substance (as in a test for disease) <reactors to tuberculin>
2
a : a piece of equipment in which a chemical reaction and especially an industrial chemical reaction is carried out b : a device for the controlled release of nuclear energy (as for producing heat)
Seen & Heard
What made you want to look up reactor? Please tell us where you read or heard it (including the quote, if possible).