Apol´lyon, or, as it is literally in the margin of the Authorized Version of Rev. 9:11, “a destroyer,” is the rendering of the Hebrew word Abaddon, “the angel of the bottomless pit.” From the occurrence of the word in Ps. 88:11, the rabbins have made Abaddon the nethermost of the two regions into which they divide the lower world; but that in Rev. 9:11 Abaddon is the angel and not the abyss is perfectly evident in the Greek.