Challenger Deep

[ chal-in-jer deep ]

noun

1. the deepest known portion of seafloor in the world, located in the Pacific Ocean at the southern end of the Mariana Trench at a depth of 35,840 feet (10,924 meters). Compare Horizon Deep ( def ), Emden Deep ( def ).

Word History and Origins

Origin of Challenger Deep¹

First recorded in 1880–85; after the British Royal Navy survey ship H.M.S. Challenger, whose expedition of 1872–1876 made the first recordings of its depth

Example Sentences

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

From BBC

In 2020, Kelly Walsh made his own journey to the bottom of the Challenger Deep in a vessel owned and piloted by Dallas explorer Victor Vescovo.

From Seattle Times

“I’d get back in the sub tomorrow and go to the bottom of the Challenger Deep.”

From Los Angeles Times

In 2012, the director and deep-sea explorer made a historic solo dive to the Challenger Deep, the deepest known point on Earth.

From Los Angeles Times

“I’d get back in the sub tomorrow and go to the bottom of the Challenger Deep.”

From Los Angeles Times