Abaddon, an angel of the bottonless pit (Rev. ix, 11). The word is derived from the Hebrew, abad, "lost," and means the lost one. There are two other angels introduced by Klopstock in The Messiah with similar names, which must not be confounded with the angel referred to in Rev.; one is Obaddon, the angel of death, and the other Abbadona the repentant devil. (See ABBADONA.)
Abaddon. [Hebrew from abad, to be ruined.] The Hebrew name of the evil spirit or destroying angel, called Apollyon in Greek. (Rev. ix. 11.) Some of the mediæval demonographers regarded him as the chief of the demons of the seventh hierarchy, and as the causer of wars, combustions, and uproars. Klopstock has made useof him in his "Messiah," under the name of Abadonna, representing him as a fallen angel, still bearing traces of his former dignity amid the disfigurements caused by sin.