Terranian adjective 1noun 1forms 1 adjective1 •Relating to Earth or its people.The first operator spoke no Terranian languages at all. The second one could only speak French and German. — 1954 noun1 •An inhabitant of Earth."How we've all longed for this glorious day! And thanks to our glorious Fire Reaper techno, all Terranians can join with us in our final triumph!" — 2013 formsTerranians