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Phobos

/ˈfoʊbɒs/noun

The larger and inner of the two moons of Mars.

The Greek roots

φόβος
phóbos
fear, panic, rout

Literally: panic

Follow a root:φόβος12 words

The story of the word

Asaph Hall found both Martian moons in August 1877, and a science master at Eton, Henry Madan, suggested the names from the Iliad, where Ares has Fear and Dread harness his horses. Homer's φόβος is not private anxiety but the rout, the moment an army breaks and runs. Phobos circles Mars faster than Mars turns, so from the surface it rises in the west, and it is drifting inward and will eventually come apart.

How it travelled
Ancient Greek → astronomical naming → English
First recorded
1877

The same roots elsewhere

Other languages reached for exactly the same Greek pieces.

Same family

phobiahydrophobiaagoraphobiaxenophobia

In a sentence

Phobos crosses the Martian sky twice in a single Martian day.

Built on the same root

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