Bible Dictionaries
Apollyon

Fausset's Bible Dictionary

("destroyer".) Satan (Revelation 9:11. He is the tempter, in order that he may be at last the destroyer. The Greek translation of the Hebrew abaddon , (destruction). As the twofold names Αbba (Hebrew) Father (Greek) in Mark 14:36 combine Jew and Gentile in the common salvation, so Satan's two names abaddon (Hebrew) and Αpollos (Greek) combine them in a common destruction.

Bibliography Information
Fausset, Andrew R. Entry for 'Apollyon'. Fausset's Bible Dictionary. https://www.studylight.org/​dictionaries/​eng/​fbd/​a/apollyon.html. 1949.