- Greek: abyssos, bottomless
Primarily an adjective signifying very deep (Wisdom 10); as a substantive it means a great cavity, primeval waters, or primal chaos, and as used in the New Testament the abode of the dead, or limbo, and the abode of evil spirits, or hell.
- “abyss”. . CatholicSaints.Info. 27 February 2010. Web. 19 January 2017. <http://catholicsaints.info/abyss/>