re|ac|tor

re|ac|tor «ree AK tuhr», noun.

1. a device for splitting atoms to produce atomic energy without causing an explosion; pile; nuclear reactor; atomic reactor. Reactors are special assemblies for the production of a controlled chain reaction and consist of layers of fissionable material, such as uranium, spaced with moderators, such as graphite and heavy water, which slow down the speed and number of the neutrons intended for splitting the uranium nuclei. »

The goal is to find economical ways of chemically treating water from the Columbia River so that it can be used to cool Hanford reactors operating at higher power than at present (Science).

2. a person or animal at reacts positively to a medical test, such as for allergy.

3. a person or animal that reacts.

4. Electricity. a type of condenser characterized by slow resistance and high inductance.