[sem-ee-suh b-mur-suh-buh l, sem-ahy-]
- 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.
- of, for, or pertaining to a semisubmersible.
Origin of semisubmersible
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018