www.alphadictionary.com

Pertaining to a great fire. ''The plane crash site was a rogalian horror''

This appears to be from some kind of fan fiction, gothic, role playing world: https://www.gothiclarp.com/rogalia/

According to the OED, it is only attested in dictionaries, where it is defined "pertaining to a great fire," from Latin rogalis with the same meaning. OED give two more words, rogal with the same meaning and roge "a funeral pyre." It provides three attestations of the latter, the most recent came from a 1661 source.

"Only attested in dictionaries". How odd. I thought dictionaries reported what words were being used in the language and how they were used. Where would a dictionary get a word that isn't actually in the language, and why would it publish it?