Word Origin & History
c.1300, from O.Fr. geant, from V.L. *gagantem (nom. gagas), from L. gigas "giant," from Gk. gigas (gen. gigantos), one of a race of savage beings, sons of Gaia and Uranus, eventually destroyed by the gods, probably from a pre-Gk. language. Replaced O.E. ent, eoten. The Gk. word was used in Septuagint
to refer to men of great size and strength, hence the expanded use in modern languages. Gigantic (1610s) replaced earlier gigantine.
"In þat tyme wer here non hauntes Of no men bot of geauntes." [Wace's Chronicle, c.1330]