abyss
ah-BISS
The deepest zone of the ocean — below 13,000 feet, where no light reaches, the pressure crushes, and the water is a few degrees above freezing. The abyss is not empty; it is full of life adapted to conditions that would kill anything from the surface. The word also applies to any chasm of unfathomable depth — a crevasse, a canyon, a void.
Etymology
Greek abyssos — a- (without) + byssos (bottom). Without bottom. The word has carried theological weight since the Septuagint used it for the primordial deep in Genesis.
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