ALL meanings of hadal
ha·dal
H h - adjective hadal of or relating to the greatest ocean depths, below approximately 20,000 feet (6500 meters). 1
- adjective hadal of or relating to the biogeographic region of the ocean bottom below the abyssal zone. 1
- noun hadal Of, or relating to the deepest parts of the ocean. 1
- adjective hadal of, relating to, or constituting the zones of the oceans deeper than abyssal: below about 6000 metres (18 000 ft) 0
- adjective hadal designating or of the ecological zone (hadal zone) of the ocean floor trenches below c. 3,300 fathoms (c. 6,000 m) 0