Earthian UK /ˈɜː.θi.ən/US /ˈɝ.θi.ən/adjective 1noun 1forms 3 adjective1 •Of or from the planet Earth.Septimus Spink, sole survivor of the Earthian space ship... — 1955 noun1 •A person from planet Earth.I inquired of one prominent Earthian: "What's of constructing ships and buildings...?" — 1940 formsEarthians · more Earthian · most Earthian
