hadal

hadal Definition

ha·dal (hād′'l)

adjective

designating or of the ecological zone (hadal zone) of the ocean floor trenches below c. 3,300 fathoms (c. 6,000 m)

Etymology: Fr < Hadès, Hades + -al, -al

hadal Usage Examples

Modifies a noun

region: The hadal regions are mainly confined to deep ocean trenches where earth's crust is descending beneath the continents.

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