Left this page be until I saw Kat Went Back as I figured the term might be revealed in the final arc, but it was not.
I would like to know if any evidence exists that this term is canon in the show. Like if a human has ever used it, or if closed captions or a TV guide summary do.
It sounds like a fan term.
IF someone knows if the term Nebulan or even Nebula is used, please specify where.