This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
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n. Any of the bones or cartilaginous segments forming the spinal column.

n. Any of the small bones which make up the backbone.

n. One of the serial segments of the spinal column.

n. One of the central ossicles in each joint of the arms of an ophiuran.

n. In Vertebrata, any bone of the spine; any segment of the backbone. See backbone and spine.

n. In echinoderms, any one of the numerous axial ossicles of the arms of starfishes. See vertebral, a.

n. one of the bony segments of the spinal column

"Very good explanation of why the vertebra is probably "lost", BTW."

ring vertebra    dorsocervical vertebræ    caudal vertebræ    vertebra prominens    laminæ of a vertebra    epencephalic vertebra    vertebra dentata    frontal vertebra    cranial vertebra    true vertebra   

vertebrae   

vertebrally    intervertebral    vertebrate    cervical vertebra    sacral vertebra    thoracic vertebra    lumbar vertebra    coccygeal vertebra    vertebral   

spine    pelvis    sternum    bhumi    collarbone    clavicle    arrondissement    rib    installment    diaphragm