{ } a. [ L. vertebratus. ] 1. (Anat.) Having a backbone, or vertebral column, containing the spinal marrow, as man, quadrupeds, birds, amphibia, and fishes. [ 1913 Webster ]
2. (Bot.) Contracted at intervals, so as to resemble the spine in animals. Henslow. [ 1913 Webster ]
3. (Zool.) Having movable joints resembling vertebrae; -- said of the arms of ophiurans. [ 1913 Webster ]
4. (Zool.) Of or pertaining to the Vertebrata; -- used only in the form vertebrate. [ 1913 Webster ]