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.

Word History and Origins

Origin of Mariana Trench¹

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

Example Sentences

Only one other fish, a closely-related Mariana Trench-dweller called the ethereal snailfish, has ever been found deeper.

From Nautilus

For the Mariana Trench test, the bot was connected to a conventional underwater robot for support and photo ops while it flapped its wings.

From Singularity Hub 

The goal was to get a human being to the bottom of the Mariana Trench for the first time since Cameron was a 5-year-old.

From The Daily Beast

It reached the lowest point of the Mariana Trench in 2009, which is thousands of meters lower than Mount Everest is tall.

From The Daily Beast