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Noun: spinous process
  1. A process projecting from the vertebra that attaches muscles and ligaments.
    "Spinous processes are exaggerated in some animals, such as the extinct Dimetrodon and Spinosaurus, where they form a sailback or finback."

Derived forms: spinous processes

Type of: appendage, outgrowth, process

Part of: vertebra

Encyclopedia: Spinous process