What is the definition or description of: discectomy?

See below: A diskectomy means to remove all or a portion of the intervertebral disk. Imagine the analogy of a jelly donut. The disk is comprised of a tough fibrous outer layer (donut) and a gelatinous inner layer. Disk herniations can occur when some of the jelly leaks out of the donut. A diskectomy is most commonly (but not always )when this herniated bit of disk (jelly) is surgically removed.

Partial disc removal: Discectomy is the a surgical procedure in which the ruptured portion of a ruptured spinal disc (the pad between two vertebrae) is removed. Disc tissue near the rupture may also be removed, but usually most of the disc is saved. If a spinal fusion is needed, a more complete discectomy is performed.