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

---

Phobos Scientific  

/ fō′bəs /

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

---

Example Sentences

The spacecraft will spend three years around Mars conducting science operations to observe Phobos and Deimos.

From Salon • Dec. 29, 2023

Scientists aren’t sure whether Phobos and Deimos are former asteroids that Mars captured into orbit with its gravity or if they formed out of debris that was already in orbit around Mars.

From Salon • Dec. 29, 2023

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 • Nov. 1, 2023

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 • Aug. 22, 2023

So once again I am the desert wanderer, using Phobos to navigate and hoping I don't stray too far.

From "The Martian" by Andy Weir