All 15 Uses of

Titans
in
The Lightning Thief

"—and so there was this big fight between the gods and the Titans," I continued, "and the gods won."
Chpt 1 *

Titans = Greek mythology: giants who ruled the Earth until overthrown by Zeus

Zeus did indeed feed Kronos a mixture of mustard and wine, which made him disgorge his other five children, who, of course, being immortal gods, had been living and growing up completely undigested in the Titan's stomach.†
Chpt 1

After the great battle with the Titans, they took over the world from their dad and drew lots to decide who got what.†
Chpt 8

The first weapon made by the Cyclopes for the war against the Titans, the bolt that sheered the top off Mount Etna and hurled Kronos from his throne; the master bolt, which packs enough power to make mortal hydrogen bombs look like firecrackers.†
Chpt 9

The Time of the Titans was the Fourth Age, sometimes called the Golden Age, which is definitely a misnomer.†
Chpt 10

Kronos, the lord of the Titans, called his reign the Golden Age because men lived innocent and free of all knowledge.†
Chpt 10

The Titan king cared nothing for your kind except as appetizers or a source of cheap entertainment.†
Chpt 10

It was only in the early reign of Lord Zeus, when Prometheus the good Titan brought fire to mankind, that your species began to progress, and even then Prometheus was branded a radical thinker.†
Chpt 10

The Titan army was scattered, their mountain fortress on Etna destroyed, their monstrous allies driven to the farthest corners of the earth.†
Chpt 21

Definitions:

(1) (Titans as in: the mythological Titan, Atlas)
Greek mythology: the giant-sized gods who ruled the Earth until overthrown by Zeus

Atlas (often seen holding the earth) is perhaps the best known Titan. The Titans were offspring of Uranus (Heaven) and Gaea (Earth).
(2) (titan as in: titan of industry)
something or someone that is very large or powerful
(3) (Titanic as in: sinking of the Titanic)
large British passenger ship that hit an iceberg and sank -- killing about 1500 people in 1912
(4) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

Saturn's largest moon is named "Titan" because of its size.