Jovial

Etymology
See.

Adjective

 * 1)  Pertaining to the planet Jupiter; Jovian.
 * 2)  Pertaining to the Roman god Jove or Jupiter (the counterpart of the Greek god Zeus), the god of the sky and thunder and the king of the gods; Jovian.

Noun

 * 1)  An inhabitant of the planet Jupiter; a Jovian.