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semisubmersible

[ sem-ee-suhb-mur-suh-buhl, sem-ahy- ]
/ ˌsɛm i səbˈmɜr sə bəl, ˌsɛm aɪ- /
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noun

Also called semisubmersible rig . a self-propelled barge that is mounted on partially submerged legs supported by underwater pontoons, rides at anchor, and serves as a work base and living quarters in deep offshore drilling operations.

adjective

of, for, or pertaining to a semisubmersible.

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Origin of semisubmersible

First recorded in 1960–65; semi- + submersible
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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