The lumbar vertebrae are the five bones of the backbone that are situated between the thoracic vertebrae and the sacrum in the lower part of the back. They are the largest of the unfused vertebrae and have stout processes for attachment of the strong muscles of the lower back.

The last five bones on the lower back above the base of the spine.

Five vertebrae of the lower back that articulate with the sacrum to form the lumbosacral joint.

The five bones in the lower-back portion of the spine.

The seven vertebrae of the loin region.

the vertebrae running over the ribs to the tail

There are 5 lumbar vertebrae. The lumbar vertebrae are located between the thoracic vertebrae and the sacral vertebrae in the spinal column. The 5 lumbar vertebrae are represented by the symbols L1 through L5.

The lumbar vertebrae are the largest segments of the movable part of the vertebral column, and can be distinguished by the absence of a foramen (hole) in the transverse process, and by the absence of facets on the sides of the body.