Ganymede

American  

[gan-uh-meed] / ˈgæn əˌmid /

noun

1. Classical Mythology. Also Ganymedes a Trojan youth who was abducted by Zeus and taken to Olympus, where he was made the cupbearer of the gods and became immortal.

2. Astronomy. the largest moon of the planet Jupiter.

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Ganymede ¹ British  

/ ˈɡænɪˌmiːd /

noun

1. the brightest and largest of the four Galilean satellites of Jupiter, and the largest in the solar system. Diameter: 5262 km; orbital radius: 1 070 000 km

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Ganymede ² British  

/ ˈɡænɪˌmiːd /

noun

1. classical myth a beautiful Trojan youth who was abducted by Zeus to Olympus and made the cupbearer of the gods

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Ganymede Scientific  

/ găn′ə-mēd′ /

1. One of the four brightest satellites of Jupiter and the seventh in distance from the planet. Originally sighted by Galileo, it is the largest satellite in the solar system.

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Example Sentences

Europa, Ganymede and Callisto are thought to harbor subsurface oceans beneath their icy crusts.

From Science Daily • Mar. 1, 2026

However, the other - Ganymede - is hoped to be in "pretty good condition" with "no sign of water breaching the vessel".

From BBC • Jan. 4, 2026

That is why astrobiologists are increasingly turning their eyes toward icy bodies like the Jovian moons of Europa and Ganymede, Saturn’s moons Titan and Enceladus, Uranus' moon Miranda and the dwarf planet Ceres.

From Salon • Jan. 4, 2025

Astronomers had previously found clear signs of subsurface oceans on only two of Saturn’s moons—Enceladus and Titan—and on Jupiter’s moons Europa and Ganymede.

From National Geographic • Feb. 7, 2024

There is no effective way for this heat, accumulated over billions of years, to reach the surface and be lost to space, and the radioactivity inside Ganymede and Callisto must therefore melt their icy interiors.

From "Cosmos" by Carl Sagan