Nouns

(n)Galilean, Galilaeanan inhabitant of Galilee (an epithet of Jesus Christ)
(n)Galilean satellite, Galileanone of the four satellites of Jupiter that were discovered by Galileo

Adjectives

(a)Galileanof or relating to Galileo or his works
(a)Galilean, Galilaeanof or relating to Galilee or its inhabitants