Barsoomian is the constructed language of the fictional Barsoomians, the sapient humanoid inhabitants of Mars in the Barsoom series of novels by Edgar Rice Burroughs. It was developed from Burroughs' examples and descriptions by Paul Frommer for the 2012 film John Carter of Mars; Frommer also created the Na’vi language for Avatar.Spoken Barsoomian has mostly lexical words, with the equivalent of grammatical words such as prepositions and pronouns conveyed telepathically.