Phobos

American

[foh-buhs, -bos] / ˈfoʊ bəs, -bɒs /

noun

Classical Mythology. Also Phobus a son and attendant of Ares and the personification of a fear held to possess armies and cause their defeat.
Astronomy. one of the two moons of Mars.

Phobos British

/ ˈfəʊbɒs /

noun

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

/ fō′bəs /

The larger and inner of the two planetary satellites of Mars.

Example Sentences

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Phobos

The spacecraft is due to arrive near Mars around August next year, where it will orbit one of its moons, Phobos.

From Barron's ● Oct. 19, 2026

The rover will scout out a landing site so that the MMX spacecraft itself can later touch down on Phobos.

From BBC ● Oct. 18, 2026

A space mission is set to launch on Monday that will attempt to grab a piece of Mars' moon Phobos and bring it back to Earth.

From BBC ● Oct. 18, 2026

If Phobos was instead captured as an asteroid, the Stickney impact could have happened much later, around 2.6 billion years ago.

From Science Daily ● Sep. 19, 2026

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

From "A Rover's Story" by Jasmine Warga

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023