hadal

adjective
ha·dal | \ˈhā-dᵊl \

Definition of hadal 

: of, relating to, or being the parts of the ocean below 6000 meters (about 20,000 feet)

First Known Use of hadal

1959, in the meaning defined above

History and Etymology for hadal

French, from Hadès Hades

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Dictionary Entries near hadal

had

hadada

had a good innings

hadal

hadarim

hadbot

hadden

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The first known use of hadal was in 1959

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