https://doi.org/10.1351/goldbook.P04903
A specific name for the atom 1H. The cation 1H+ is a proton, the species 1H is a protide anion, and 1H is the protio group. The word proton should not be used for H+ in its natural abundance.
Source:
PAC, 1988, 60, 1115. (Names for hydrogen atoms, ions, and groups, and for reactions involving them (Recommendations 1988)) on page 1116 [Terms] [Paper]