Definition of Phobos in English:

Share this entry


Pronunciation: /ˈfōbəs/ /ˈfōbäs/
The inner, and larger, of the two satellites of Mars, discovered in 1877. Heavily cratered and shaped like a potato, it is 17 miles (28 km) long. Compare with Deimos.


Named after one of the sons of the Greek war god Ares. The name means literally 'fear'.

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.