invertebrate
US /ɪnˈvɝː.t̬ə.brət/
UK /ɪnˈvɝː.t̬ə.brət/
1.
an animal lacking a backbone, such as an arthropod, mollusc, annelid, or coelenterate.
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Worms are common examples of invertebrates.
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The ocean is home to countless species of invertebrates.
1.
lacking a backbone or spinal column.
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Sponges are considered invertebrate organisms.
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Many marine creatures are invertebrate.