Dione

In Greek mythology, Dione ("divine queen") was the mother of Aphrodite by Zeus. She was a Titan. Her name is actually a feminine form of the same name as Zeus. The name is also used to refer to Aphrodite.

In astronomy, Dione is a moon of Saturn. Asteroid 106 is also named for Dione.

In organic chemistry, a dione is a molecule with two ketone functional groups.