Definition of Deimos in English:

Deimos

proper noun

Astronomy
  • The outer, and smaller, of the two satellites of Mars, discovered in 1877. It is football-shaped and 10 miles (16 km) long.

    Compare with Phobos

Origin

Named after one of the sons of Ares in Greek mythology, the name means literally fear, terror.

Pronunciation:

Deimos

/ˈdīmäs/