neutrons

n. elementary particle in atomic nuclei which has no electrical charge (Physics)

This article is a discussion of neutrons in general. For the specific case of a neutron found outside the nucleus, see free neutron. In physics, the neutron is a subatomic particle with no net electric charge and a mass of 939.573 MeV/c² or 1.008 664 915 (78) u (1.6749 × 10−27 kg, slightly more than a proton). Its spin is ½. Its antiparticle is called the antineutron. The neutron, along with the proton, is a nucleon.
See more at Wikipedia.org...

Noun
1. an elementary particle with 0 charge and mass about equal to a proton; enters into the structure of the atomic nucleus
(hypernym) nucleon

n. neutron, elementary particle in atomic nuclei which has no electrical charge (Physics)

n. neutron, elementary particle in atomic nuclei which has no electrical charge (Physics)