A microreactor is a small-scale chemical reactor that allows for precise control and efficient reactions. Synonyms for this technological innovation include microfluidic reactor, microchannel reactor, microfabricated reactor, and miniaturized reactor. These devices are used in a variety of applications, such as drug discovery, chemical synthesis, and biofuel production. Other synonyms include microscale reactor, nanoreactor, and lab-on-a-chip. The popularity of microreactors has grown in recent years due to their ability to increase reaction efficiency, reduce the amount of waste produced, and improve reaction safety. Regardless of the term used to describe these miniature reactors, they are an important tool in modern scientific research and processes.