plural noun Achor·da·ta \¦āˌ-kȯr-ˈdä-tə, -ˈdā-tə\

Definition of Achordata

  1. :  an arbitrary subdivision of the animal kingdom including all animals lacking a notochord —opposed to Chordata


\(ˈ)ā-¦kȯr-ˌdāt, -dət\ adjective or noun

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Origin and Etymology of achordata

New Latin, from 2a- + Chordata

First Known Use: 1889

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