Definition of Mariana Trench in English:

Mariana Trench

Line breaks: Mari|ana Trench
  • An ocean trench to the south-east of the Mariana Islands in the western Pacific, with the greatest known ocean depth (11,034 m, 36,201 ft at the Challenger Deep).

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Word of the day astrogation
Pronunciation: ˌastrəˈgāSHən
noun
(in science fiction) navigation in outer space