Definition of "subsea" [subsea]

• Beneath the sea; submarine. (adjective)

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• "The terms subsea (or offshore) and coastal permafrost refer to geological materials that have remained below 0°C for two or more years and that occur at or below sea level."
• "The use of satellite wells -- using a method called subsea tiebacks -- is proliferating."
• "Billy Stringfellow, the Transocean shore-side official known as the subsea superintendent, said he didn't hear about the leaks before the incident and left it up to rig workers to determine if they were significant enough to report."