vertebral
vertebral
Origin: From Latin vertebra (joint, vertebra) + adjectival suffix -al.
Also means
spinal
Usage Note
Vertebral is most commonly heard in columna vertebral (spinal column / backbone). Metaphorically, el eje vertebral ('the vertebral axis') describes the central pillar of an argument or policy, and this figurative use is common in essays and journalism. The adjective is invariable for gender: la columna vertebral, el canal vertebral. Do not confuse with vertebrado (vertebrate, as in the animal class).
Examples
"Se lesionó la columna vertebral en el accidente."
Natural Translation
He injured his spinal column in the accident.

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