Deimos

American  

[dahy-mos] / ˈdaɪ mɒs /

noun

1. an ancient Greek personification of terror, a son of Ares and Aphrodite.

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

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Deimos British  

/ ˈdeɪmɒs /

noun

1. the smaller of the two satellites of Mars and the more distant from the planet. Approximate diameter: 13 km Compare Phobos

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Deimos Scientific  

/ dē′mōs,dā′- /

1. The satellite of Mars that is second in distance from the planet.

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Example Sentences

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 • 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

Recently it captured high-resolution images of Deimos, the smaller of the two Martian moons.

From New York Times • May 29, 2023

On April 24 the U.A.E. announced that its orbiter, Hope, had studied the smaller of Mars’s two moons, Deimos.

From Scientific American • May 2, 2023

‘This is the temple of my brothers, Deimos and Phobos.’

From "Blood of Olympus" by Rick Riordan