Answer:
in·ver·te·brate
/inˈvərdəbrət,inˈvərdəbrāt/
noun
plural noun: invertebrates
an animal lacking a backbone, such as an arthropod, mollusk, annelid, coelenterate, etc. The invertebrates constitute an artificial division of the animal kingdom, comprising 95 percent of animal species and about 30 different phyla.
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