Classical Mythology .

any of the sons of Uranus and Gaea, including Coeus, Crius, Cronus, Hyperion, Iapetus, and Oceanus.

Also, Titaness. any of the sisters of these, including Mnemosyne, Phoebe, Rhea, Tethys, Themis, and Thia.

any of the offspring of the children of Uranus and Gaea.

the Titan, Helios.

Astronomy . one of the moons of Saturn.

( usually lowercase ) a person or thing of enormous size, strength, power, influence, etc.

a titan of industry.

Military . a two-stage, liquid-fueled U.S. intercontinental ballistic missile in service since the late 1950s and designed for launch from underground silos.

( lowercase ) titanic 2 ( def. 2 ) .

noun

behemoth , goliath , jumbo , leviathan , mammoth , monster