in·ver·te·brate /(ˌ)ɪnˈvɚ/
(a.)無脊骨的,無脊椎的,無骨氣的無脊椎動物,無骨氣的人
In·ver·te·brate a. Zool. Destitute of a backbone; having no vertebræ; of or pertaining to the Invertebrata. -- n. One of the Invertebrata.
Age of invertebrates. See Age, and Silurian.
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invertebrate
adj : lacking a backbone or spinal column; "worms are an example
of invertebrate animals" [ant: vertebrate]
n : any animal lacking a backbone or notochord; the term is not
used as a scientific classification