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adjectivelacking a backbone or spinal column
Similar:
Opposite: -
nounany animal lacking a backbone or notochord; the term is not used as a scientific classification
Definition that contains invertebrate
- shellfish invertebrate having a soft unsegmented body usually enclosed in a shell
- mollusk invertebrate having a soft unsegmented body usually enclosed in a shell
- arthropod invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin
- mollusc invertebrate having a soft unsegmented body usually enclosed in a shell