Final answer:
The characteristic 'Elongated spinous process' does not belong to the lumbar region; instead, lumbar vertebrae have a short, blunt spinous process.
Step-by-step explanation:
The characteristic that does not belong to the lumbar region is the "Elongated spinous process." The lumbar vertebrae are indeed large in size with a thick body to support the greatest amount of body weight, and they have a short, blunt spinous process, as opposed to the elongated spinous process which is a feature of the thoracic vertebrae. Lumbar vertebrae are characterized by a bulk centrum (vertebral body), a short, rounded spinous process that projects posteriorly, large and well-oriented articular processes with the superior process facing backward and the inferior facing forward.