Invertebrate
/ˌɪˈnvɜrtəbrət/
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Definition
(noun) An animal without vertebrae (i.e., without a backbone).
Sentence Examples
The invertebrate animal was a worm.
Invertebrate species are diverse.
CEFR Practice Quiz
An ____ is a type of animal that does not have a backbone, such as a spider, a snail, or an octopus.