Jillian is a feminine given name of Latin origin, meaning "youthful" or "sky father". It is the feminine form of Julian, Julio, Julius, and Julien, which means "Jove's child" or "dedicated to Jupiter". The name is derived from the ancient Roman family of Julianus and Iulius and is associated with Jupiter, symbolizing kingship and sovereignty. The name Jillian has several variants, such as Gillian and Jilian, and can also be spelled as Jill, which is a nickname. In English Baby Names, Jillian means "child of the gods," while in Latin Baby Names, it signifies "youthful" and "Jove's child". The name has a modern and retro feel, making it a popular choice for parents.
