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First known use, by meaning
- from 1853 Of or relating to the interval or zone along the sea bottom, at the depth of between fifty and one hundred fathoms.
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: Of or relating to the interval or zone along the sea bottom, at the depth of between fifty and one hundred fathoms. Full definition →
Etymology from Wiktionary, CC BY-SA 4.0.