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Phobos

American  
[foh-buhs, -bos] / ˈfoʊ bəs, -bɒs /

noun

  1. Classical Mythology. Also Phobus a son and attendant of Ares and the personification of a fear held to possess armies and cause their defeat.

  2. Astronomy. one of the two moons of Mars.


Phobos British  
/ ˈfəʊbɒs /

noun

  1. the larger of the two satellites of Mars and the closer to the planet. Approximate diameter (although it has an irregular shape): 23 km Compare Deimos

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Phobos Scientific  
/ fōbəs /
  1. The larger and inner of the two planetary satellites of Mars.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The information I have suggests that Deimos and Phobos look somewhat similar to Earth’s moon, though they are much smaller in size.

From Literature

While Earth’s Moon has many visitors – big and small, robotic and crewed – planned for 2024, Mars’ moons Phobos and Deimos will soon be getting a visitor as well.

From Salon

A second liquid layer inside the planet also meshes better with other evidence, such as how Mars responds to being deformed by the gravitational tug of its moon Phobos.

From Scientific American

Many industry experts note that even before the latest Western sanctions, the use of substandard components led to the collapse of an ambitious mission to send a probe to Mars’ moon Phobos in 2011.

From Seattle Times

Of Mars’s two moons, Phobos is slightly larger.

From Scientific American