rior
The term "rior" does not appear to be a recognized word in standard English dictionaries or commonly used technical terminology. It is possible that "rior" is a misspelling, a proper noun, a neologism, or a term specific to a niche context not widely documented.
If "rior" is intended to be a misspelling, common alternatives might include "riority," "river," "prior," or "roar,"
Without further context, it is impossible to definitively determine the intended meaning or significance of "rior."