Usage examples (19)

• Below six thousand meters lies a region known as the hadal zone (a term coined only in 1959 from the French Hadès); in the Marianas Trench off the Philippines it is...
• To this day, that fleeting observation is all we know of higher life at the bottom of the hadal zone.
• The hadal zone with its freezing water, heavy pressure, and darkness is seemingly harsh, but some of the imagined hardships are illusory.
• While the hadal zone is almost entirely unexplored, it is not untouched, for humans have been bombarding it with an array of materials ranging from deadly toxins to...