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Mariana Trench

[mair-ee-ah-nuh trench, mar-]

noun

  1. the world’s deepest oceanic trench, a crescent-shaped depression located in the western Pacific Ocean, south and west of the Mariana Islands: site of the Challenger Deep.



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Word History and Origins

Origin of Mariana Trench1

First recorded in 1930–35; named after the Mariana Islands
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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The deepest part of the ocean lies in the Mariana Trench in the western Pacific Ocean, where the ocean floor lies almost 11,000 feet below sea level — a height that is taller than Mount Everest.

Read more on Salon

From the bottom of the Mariana trench to the top of Mount Everest, there is little escaping the problem.

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In 2021, the duo ventured together in a submersible to the Challenger Deep and the Sirena Deep in the Mariana Trench.

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Microplastics have been found in even the most remote corners of the Earth, such as the Mariana Trench, the deepest oceanic trench on the planet.

Read more on Slate

A hug from Mom hadn’t fixed it, but it had pulled Cat’s heart from the bottom of the Mariana Trench to somewhere around sea level.

Read more on Literature

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Marianas TrenchMarianism