Meaning :julian as a girl's name is pronounced joo-lee-in. it is of latin origin, and the importance of julian is "young, jupiter 's child". variant of julius, the family clan-the names of some of the most powerful roman emperors. for the first time in the 18th century. see also giuliano. the musician julian lennon; activist julian bond.,soft-haired, a descendant of zeus,who has a soft beard,young, smooth,