invertebrate


in·ver·te·brate

adjective \(ˌ)in-ˈvər-tə-brət, -ˌbrāt\

Definition of INVERTEBRATE

1
:  lacking a spinal column; also :  of, relating to, or concerned with invertebrate animals
2
:  lacking in strength or vitality :  weak
invertebrate noun

Examples of INVERTEBRATE

  1. <an invertebrate Congress that blithely went along with the President's ill-conceived plan>

Origin of INVERTEBRATE

New Latin invertebratus, from Latin in- + New Latin vertebratus vertebrate
First Known Use: 1832

Other Invertebrates (Except Insects) Terms

anemone, cephalopod, quahog

invertebrate

noun    (Concise Encyclopedia)

Any animal that lacks a vertebral column, or backbone. They include the protozoans, annelids, cnidarians, echinoderms, flatworms, nematodes, mollusks, and arthropods. More than 90% of living animals are invertebrates. Worldwide in distribution, they range in size from minute protozoans to giant squids. Apart from the absence of a vertebral column, invertebrates have little in common. They are generally soft-bodied and have an external skeleton for muscle attachment and protection. See also vertebrate.

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