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[in-vur-tuh-brit, -breyt] /ɪnˈvɜr tə brɪt, -ˌbreɪt/


without strength of character.
an invertebrate animal.
a person who lacks strength of character.
/ɪnˈvɜːtɪbrɪt; -ˌbreɪt/
any animal lacking a backbone, including all species not classified as vertebrates
of, relating to, or designating invertebrates

1826, from Latin in- “not” (see in- (1)) + vertebra “joint” (see vertebra). Invertebrata as a biological classification was coined 1805 by French naturalist Georges Léopole Chrétien Frédéric Dagobert, Baron Cuvier (1769-1832). As an adjective by 1838.

invertebrate in·ver·te·brate (ĭn-vûr’tə-brĭt, -brāt’)

An animal, such as an insect or a mollusk, that lacks a backbone or spinal column.
(ĭn-vûr’tə-brĭt, -brāt’)
Adjective Having no backbone or spinal column.

Noun An animal that has no backbone or spinal column and therefore does not belong to the subphylum Vertebrata of the phylum Chordata. Most animals are invertebrates. Corals, insects, worms, jellyfish, starfish, and snails are invertebrates.
invertebrates [(in-vur-tuh-bruhts, in-vur-tuh-brayts)]

Animals without backbones. (Compare vertebrates.)


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