multispecies

From multi- +‎ species.

multispecies (not comparable)

1. Comprising or involving more than one species.
   • [2017 November, N. K. Jemisin, Mac Walters, chapter 8, in Mass Effect Andromeda: Initiation‎^[1], 1st edition (Science Fiction), Titan Books, →ISBN, →OCLC, page 144:

     “Okay. Maybe you shouldn't tell anyone you admire the last species that attempted to commit galaxy-wide multi-species genocide.”]