slow neutron

noun Physics.

a neutron with low kinetic energy, especially one slowed by the moderator in a nuclear reactor.
Also called thermal neutron.

Origin of slow neutron

First recorded in 1930–35

OTHER WORDS FROM slow neutron

slow-neu·tron, adjective

Words nearby slow neutron

slow infection, slow loris, slow march, slow match, slow motion, slow neutron, slow on the uptake, slow spot, slow time, slow up, slow virus

British Dictionary definitions for thermal neutron

slow neutron

noun

physics a neutron having a kinetic energy of less than 100 electronvolts

Scientific definitions for thermal neutron (1 of 2)

thermal neutron

See slow neutron.

Scientific definitions for thermal neutron (2 of 2)

slow neutron
[ slō ]

A neutron that is in thermal equilibrium with the surrounding medium, especially one produced by fission in a nuclear reactor, and slowed by a moderator. The uranium 235 used in thermal nuclear reactors undergoes fission more readily when struck by slow neutrons than when struck by the fast neutrons released by fission. Also called thermal neutron Compare fast neutron.