radianissa
Radianissa is a term that appears to be a neologism or a specialized term, possibly related to mathematics or a specific field of study. Its exact meaning and usage are not widely established in common dictionaries or encyclopedias. Without further context, it is difficult to provide a definitive definition.
In a hypothetical mathematical context, "radianissa" might be a portmanteau or a derivative suggesting a connection
Alternatively, "radianissa" could originate from a fictional work, a personal project, or a very niche academic