mercurian

adjective1

1. •
   Containing divalent mercury.

noun2

1. •
   An inhabitant of the planet Mercury.
2. •
   One who is mercurial.

   • When a Mercurian is connected with the arts, it is often possible to discern a lack of the heavy, thoroughgoing seriousness which some artists seem to feel is the least that life deserves. — 1995

adjective1

1. •
   Of or relating to the planet Mercury.