(physics) A relatively slow-moving neutron whose energy is governed by the temperature of its environment.

plural of neutron number

A form of non-ionizing radiation consisting of free neutrons.

A neutron not bound in an atomic nucleus.

plural of neutron flux

(physics, of a nucleus or isotope) Having a large ratio of neutrons to protons

An atomic bomb that produces a greater amount of neutrons, and a lesser amount of blast; the intention being to create equal lethal neutron radiation and blast radii which increases the effectiveness of the weapon against armour while reducing collateral damage.

(astronomy) A degenerate star that has been so collapsed by gravity that its electrons and protons have been merged into neutrons by the intense pressure. The solid mass of neutrons is sometimes called neutronium.

(physics) a device capable of diffracting neutrons and studying their wavelike characteristics

(physics) The interference process which occurs when neutrons are scattered by the atoms within solids, liquids and gases.