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One of the serial segments of the spinal column.

Of or pertaining to a vertebræ, or the vertebral column; spinal; rachidian.

At or within a vertebra or vertebræ; -- distinguished from interverterbrally.

in the transverse processes of cervical vertebræ and of the canal which they form for the vertebral artery and vein.

with Amphioxus in which the backbone is represented by a simple undivided notochord. The Vertebrata always have a dorsal, or neural, cavity above the notochord or backbone, and a ventral, or visceral, cavity below it. The subdivisions or classes of Vertebrata are Mammalia, Aves, Reptilia, Amphibia, Pisces, Marsipobran…

One of the Vertebrata.

Having a backbone, or vertebral column, containing the spinal marrow, as man, quadrupeds, birds, amphibia, and fishes.

Between vertebræ. -- In`ter*ver"te*bral*ly, adv.

Same as Invertebrate.

A comprehensive division of the animal kingdom, including all except the Vertebrata.

Destitute of a backbone; having no vertebræ; of or pertaining to the Invertebrata. -- n.

Having no backbone; invertebrate.

Surrounding the vertebræ.

Situated immediately in front, or on the ventral side, of the vertebral column; prespinal.

One of the primitive masses, or segments, into which the mesoblast of the vertebrate embryo breaks up on either side of the anterior part of the notochord; a mesoblastic, or protovertebral, somite. See Illust. of Ectoderm.

Of or pertaining to the protovertebræ.

Of or pertaining to the sacrum and that part of the vertebral column immediately anterior to it; as, the sacrovertebral angle.

Situated beneath, or on the ventral side of, the vertebral column; situated beneath, or inside of, the endoskeleton; hypaxial; hyposkeletal.

The vertebral column; the spinous process of a vertebra. Dunglison.

The lowest group of Vertebrata, including the amphioxus, in which no skull exists.