HMRG Deep

proper noun

Former name of Sirena Deep: a deep in Mariana Trench, Pacific; second deepest place in the Mariana Trench, and third deepest place on Earth.

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Meanings

proper noun
  1. Former name of Sirena Deep: a deep in Mariana Trench, Pacific; second deepest place in the Mariana Trench, and third deepest place on Earth.

Synonyms & antonyms

Also see
sirena deep

Origin

From the Hawaiʻi Mapping Research Group, which performed a sonar survey of the region in 1997, and discovered the deep.

Full word history & related roots →
Cite this entry
APA

HMRG Deep. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/HMRG%20Deep

MLA

“HMRG Deep.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/HMRG%20Deep. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “HMRG Deep,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/HMRG%20Deep.

Source: HMRG Deep on Wiktionary, CC BY-SA 4.0.