Definition of Challenger Deep in English:

Challenger Deep

Line breaks: Chal|len¦ger Deep
The deepest part (11,034 m, 36,201 ft) of the Mariana Trench in the North Pacific, discovered by HMS Challenger II in 1948.

Definition of Challenger Deep in:

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Word of the day neoteny
Pronunciation: niːˈɒt(ə)ni
noun
retention of juvenile features in the adult animal