plural noun
Acra·​si·​a·​les | \ ə-ˌkrā-zhē-ˈā-(ˌ)lēz\

Definition of Acrasiales

: an order of cellular slime molds including the genus Acrasis

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First Known Use of Acrasiales

1896, in the meaning defined above

History and Etymology for Acrasiales

borrowed from New Latin, from Acrasis acrasis + -ales -ales

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The first known use of Acrasiales was in 1896

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