1. a large structure where nuclear reactions are controlled to produce energy or radioactive substances
2. a container in which chemical reactions take place under controlled conditions
Usage: chemistry; industrial
3. a person who reacts to something, especially in a predictable way

Examples

• The nuclear reactor provides electricity for the entire city.
• Safety protocols must be followed when operating the reactor.
• The chemical reactor maintained a constant temperature during the process.
• Engineers monitored the reactor’s pressure levels throughout the experiment.
• She’s more of a reactor than a leader in group discussions.
• The reactor core was shut down for routine maintenance.
• Industrial reactors are used to manufacture various chemicals.