What does "vertebrated" mean?

Vertebrated: (Bot.) Contracted at intervals, so as to resemble the spine in animals. Henslow.

Additional senses

  1. 2.(Zoöl.) Having movable joints resembling vertebræ; -- said of the arms ophiurans.
  2. 3.(Zoöl.) Of or pertaining to the Vertebrata; -- used only in the form vertebrate.

Sources