Definition of Challenger Deep in English:

Challenger Deep

Syllabification: Chal·leng·er Deep
Pronunciation: /ˌCHalənjər ˈdēp
The deepest part (36,201 feet, 11,034 m) of the Mariana Trench in the North Pacific, discovered by HMS Challenger II in 1948.

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Word of the day deictic
Pronunciation: ˈdīktik
denoting a word whose meaning depends on context...