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Invertebrate
01
species that do not possess or cannot develop a spinal column, such as an arthropod, mollusk, etc.
Example
Invertebrates like butterflies and ants are vital to garden ecosystems.
Crabs and lobsters are marine invertebrates with hard exoskeletons.
The pond teemed with tiny invertebrates that served as food for larger fish.
invertebrate
01
(of an animal) lacking a spinal column or notochord