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vertebra

noun, plural ver·te·brae [vur-tuh-bree, -brey] /ˈvɜr təˌbri, -ˌbreɪ/, ver·te·bras. Anatomy, Zoology.

any of the bones or segments composing the spinal column, consisting typically of a cylindrical body and an arch with various processes, and forming a foramen, or opening, through which the spinal cord passes.

noun plural -brae (-briː) or -bras

one of the bony segments of the spinal column

1610s, from Latin vertebra “joint or articulation of the body, joint of the spine” (plural vertebræ), perhaps from vertere “to turn” (see versus) + instrumental suffix -bra. The notion is of the spine as the “hinge” of the body.

n. pl. ver•te•bras

Any of the bones or cartilaginous segments of the spinal column, usually 33 in number.

Plural vertebrae (vûr′tə-brā′, -brē′) vertebras

Any of the bones that make up the vertebral column. Each vertebra contains an arched, hollow section through which the spinal cord passes. In humans, the vertebrae are divided into cervical, thoracic, and lumbar sections, and the sacrum and coccyx are both made up of a series of fused vertebrae. The vertebrae are separated by cartilaginous intervertebral disks. See more at skeleton.