What is "hydros"

n. (plural of hydro English)

Hydros may refer to:

• Hydros (mythology), one of the first principles in ancient Greek cosmogonies
• HYDROS (Hydrosphere State), a planned satellite mission and predecessor of the Soil Moisture Active and Passive mission, providing measurements of soil-moisture and freeze thaw state
• Hydros, a fictional ocean planet in The Face of the Waters by Robert Silverberg

Hydros (also Hydrus), in Greek mythology, is one of the first primordial gods to emerge forth along with Thesis. Hydros is also sometimes believed to be a child of Chaos and is believed to have emerged alongside the Gods of creation and mud at the creation of the universe.