Wordnet 3.0
ADJECTIVE (2)
1. 
 of or pertaining to or characteristic of or resembling the planet Jupiter; 
- Example: "Jovian satellites"2. 
 of or pertaining to or befitting the Roman deity Jupiter; 
- Example: "Jovian thunderbolts"- Example: "Jovian wrath"
The Collaborative International Dictionary of English v.0.48:
Jovian \Jo"vi*an\, prop. a.
   Of or pertaining to Jove, or Jupiter (either the deity or the
   planet).
   [1913 Webster]
WordNet (r) 3.0 (2006):
Jovian
    adj 1: of or pertaining to or characteristic of or resembling
           the planet Jupiter; "Jovian satellites"
    2: of or pertaining to or befitting the Roman deity Jupiter;
       "Jovian thunderbolts"; "Jovian wrath"