Noah Webster's Dictionary 1. (a.) Of extraordinary size; like a giant. 2. (a.) Such as a giant might use, make, or cause; immense; tremendous; extraordinarily; as, gigantic deeds; gigantic wickedness.

Multi-Version Concordance Gigantic (1 Occurrence) Revelation 9:2 He opened the pit of the abyss, and smoke went up out of the pit, like the smoke from a burning furnace. The sun and the air were darkened because of the smoke from the pit. (See NIV)