hydroxoproton
Hydroxoproton is not a recognized term in chemistry. It is possible this is a misunderstanding or a neologism. The term "hydroxo" typically refers to the hydroxyl group, which consists of one oxygen atom and one hydrogen atom (OH-). The term "proton" refers to a hydrogen atom with a positive charge (H+), which is also the nucleus of a hydrogen atom. When combined, "hydroxoproton" does not correspond to any standard chemical species or concept.
In aqueous chemistry, the hydroxyl ion (OH-) and the hydrogen ion (H+) are fundamental. The hydrogen ion,
Perhaps "hydroxoproton" is intended to describe a specific interaction or complex involving these entities, but without