tritium

Also contains definitions of: tritide, tritio, triton

A specific name for the atom 3H. The cation3H+ is a triton, the species 3H is a tritide anion and 3H is the tritio group.
Source:
PAC, 1988, 60, 1115 (Names for hydrogen atoms, ions, and groups, and for reactions involving them (Recommendations 1988)) on page 1116