Deimos

[ dahy-mos ]
/ ˈdaɪ mɒs /

noun

an ancient Greek personification of terror, a son of Ares and Aphrodite.
Astronomy. one of the two moons of Mars.

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British Dictionary definitions for Deimos

Deimos
/ (ˈdeɪmɒs) /

noun

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

Scientific definitions for Deimos

Deimos
[ dēmōs, dā- ]

The satellite of Mars that is second in distance from the planet.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.