Definition of Mid-Atlantic Ridge in English:

Mid-Atlantic Ridge

Syllabification: Mid-At·lan·tic Ridge
A submarine ridge system that extends the length of the Atlantic Ocean from the Arctic to the Antarctic. It is seismically and (in places) volcanically active; the islands of Iceland, the Azores, Ascension, St. Helena, and Tristan da Cunha are located on it.

Definition of Mid-Atlantic Ridge in:

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Word of the day hypnopompic
Pronunciation: ˌhɪpnə(ʊ)ˈpɒmpɪk
adjective
relating to the state immediately preceding waking up