‖n. pl. [ NL., fr. L. in- not + vertebratus vertebrate. ] (Zool.) A comprehensive division of the animal kingdom, including all except the Vertebrata. [ 1913 Webster ]
a. (Zool.) Destitute of a backbone; having no vertebræ; of or pertaining to the Invertebrata. --
Age of invertebrates.
a. Having no backbone; invertebrate. [ 1913 Webster ]
a. (Zool.) Destitute of a backbone; having no vertebræ; of or pertaining to the Invertebrata. --
Age of invertebrates.
a. Having no backbone; invertebrate. [ 1913 Webster ]