(deu-te-ron') The nucleus of the deuterium atom, consisting of one proton and one neutron, also referred to as heavy water. The nucleus of the deuterium atom is the same as the isotope of hydrogen that has twice the mass of ordinary hydrogen.

is the nucleus of a heavy hydrogen atom. Fusion of two deuterons is one step in the thermonuclear fusion of hydrogen.

An isotope of hydrogen in which there is a neutron bound to the proton in the nucleus. Often called “heavy hydrogen” because of the extra mass of the neutron.

the nucleus of deuterium; consists of one proton and one neutron; used as a bombarding particle in accelerators

a proton bound to a neutron

The nucleus of a hydrogen-2 (deuterium) atom consisting of one neutron and one proton. A deuteron is considered a subatomic particle with "unit" positive charge.(Basic Science/Radiography/radiationsources/fusion_popup.htm)

Nucleus of heavy hydrogen ( deuterium); atomic particle consisting of one proton and one neutron.