Titan

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Greek Mythology One of a family of giants, the children of Uranus and Gaea, who sought to rule heaven and were overthrown and supplanted by the family of Zeus.
2. n. One of prodigious size, strength, or achievement: "the twin titans of the beverage industry” ( David Barboza).
3. n. The largest satellite of Saturn and the 11th in distance from the planet. It is the second largest satellite in the solar system.

Century Dictionary and Cyclopedia

1. n. In mythol., one of a race of primordial deities, children of Uranus and Ge (Heaven and Earth), or their son Titan, supposed to represent the various forces of nature. In the oldest accounts there were six male Titans (Oceanus, Cœus, Crius, Hyperion, Japetus, and Kronos) and six female (Theia, Rhea Themis, Mnemosyne, Phœbe, and Tethys). They were imprisoned by their father Uranus from their birth, but, after unmanning and dethroning him, were delivered by Kronos. Zeus, son of Kronos, compelled him to disgorge his elder brothers and sisters, whom he had swallowed at their birth, and after a terrible war thrust the Titans (except Oceanus) into Tartarus, under guard of the hundred-armed giants. In the later legends, Titan, the father of the Titans, yielded the supreme power to his younger brother Kronos, but regained it, and was finally overcome by the thunderbolts of Zeus (Jupiter), son of Kronos (Saturn), who then became the supreme god. The Titans in their wars are said to have piled mountains upon mountains to scale heaven, and they are taken as the types of lawlessness, gigantic size, and enormous strength.
2. n. Any one of the immediate descendants of the Titans, as Prometheus and Epimetheus.
3. n. The sun personified. Titan being at times substituted by the Latin poets for Helios as god of the sun.
4. n. The sixth in order of the eight satellites of the planet Saturn, and the largest, appearing as a star of the ninth magnitude. See Saturn.
5. n. A genus of beetles.
6. n. A calcareous earth; titanite.
7. n. Titanium.

Wiktionary

1. n. Any of the giant gods in Greek mythology who preceded the Olympian gods.
2. n. The largest moon of the planet Saturn.

GNU Webster's 1913

1. adj. Titanic.

WordNet 3.0

1. n. a person of exceptional importance and reputation
2. n. (Greek mythology) any of the primordial giant gods who ruled the Earth until overthrown by Zeus; the Titans were offspring of Uranus (Heaven) and Gaea (Earth)
3. n. the largest of the satellites of Saturn; has a hazy nitrogen atmosphere