Eukaryote
invertebrata
Subclass of:
Animals
Definitions related to invertebrates:
  • An animal lacking a vertebral column. This group consists of 98% of all animal species.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • (invertebrata) General category of the kingdom Animalia (multicellular animals) including those phyla whose members lack a notochord; ie, all animals except vertebrates in the phylum Chordata.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • Animals that have no spinal column.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
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