The Deep Sea and the Creatures that Live in It; C.P Idyll; Thomas Y. Crowell Company; New York; 1976.
2. Anything too deep or too great to be measured; lowest depth: Melody's heart felt like an abyss of despair after she received the e-mail.
3. An immeasurably deep chasm, depth, or void: The canyon was described as an abyss because it was almost impossible to see its bottom.
4. The primeval chaos out of which it was believed that the earth and sky were formed: The film portrayed the abyss out of which the formation of the earth and solar system was supposed to have taken place.
5. The abode of evil spirits; thought of as a bottomless pit: Hugh's anguished soul descended into the abyss of hell.
Strictly speaking, the abyss is a particular zone extending between 3,000 and 6,000 meters (9,840 and 19,680 feet at 3.28 feet per meter) in depth. By extension, the abyss is also used to designate deep oceans everywhere.