A specific name for the atom $\ce{^{2}H}$. The
cation $\ce{2H^{+}}$ is a
deuteron the species $\ce{2H^{−}}$ is a 'deuteride'
anion and $\ce{^{2}H}$ is the '
deuterio' group.
Source: PAC, 1988,
60, 1115. (
Names for hydrogen atoms, ions, and groups, and for reactions involving them (Recommendations 1988)) on page 1116 [
Terms] [
Paper]