Definition of undersea in English:

undersea

Syllabification: un·der·sea
Pronunciation: /ˌəndərˈsē
 
/

adjective

  • Below the sea or the surface of the sea: undersea cables
    More example sentences
    • Some of the salt in the oceans comes from undersea volcanoes and hydrothermal vents.
    • Hydrothermal vents result from undersea cracks in the earth's crust, which allow lava and hot fluids to seep out.
    • In Asia, the company's subsidiary owns undersea cables, fiber optic rings, and Web hosting centers in several cities.

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Pronunciation: kəːf
noun
a slit made by cutting with a saw