Definitions for "nucleon"
A neutron or proton, when contained within an atomic nucleus.
A particle found in the nucleus, that is, a proton or a neutron.
any particle present in the nucleus of an atom, that is, a proton or neutron.
Nucleon is a power source in the fictional Transformers universe. It was introduced during the beginning of the Action Masters toyline in 1990. The Action Masters were composed of small-scale 3¾" Transformers, a mixture of pre-exisitng characters, who were designed to closely resemble their animated counterparts from the original Transformers animated series, and original creations.