Abaddon

The Hebrew term Abaddon (Hebrew: אֲבַדּוֹן‎‎, 'Ǎḇaddōn), and its Greek equivalent Apollyon (Greek: Ἀπολλύων, Apollyon), appears in the Bible as a place of destruction. In the Hebrew Bible, abaddon often appears alongside the place שאול (sheol), meaning the realm of the dead. In the New Testament Book of Revelation, an angel called Abaddon is described as the king of an army of locusts; his name is first transcribed in Greek (Revelation 9:11—"whose name in Hebrew is Abaddon, The Angel of Death." (Ἀβαδδὼν), and then translated ("which in Greek means the Destroyer" (Ἀπολλύων, Apollyon)). The Latin Vulgate and the Douay Rheims Bible have additional notes (not present in the Greek text), "in Latin Exterminans", exterminans being the Latin word for "destroyer".

According to the Brown Driver Briggs lexicon, the Hebrew abaddon (Hebrew: אבדון; avadon) is an intensive form of the Semitic root and verb stem abad (אָבַד) "perish" (transitive "destroy"), which occurs 184 times in the Hebrew Bible. The Septuagint, an early Greek translation of the Hebrew Bible, renders "abaddon" as "ἀπώλεια", while the Greek Apollyon comes from apollumi (), "to destroy". The Greek term Apollyon (, "the destroyer"), is the active participle of apollumi (, "to destroy"), and is not used as a name in classical Greek texts.

The term abaddon appears six times in the Masoretic text of the Hebrew Bible; abaddon means destruction or "place of destruction", or the realm of the dead, and is accompanied by Sheol.

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