plural noun
Het·​er·​o·​tri·​cha·​les | \ ˌhetərō‧trəˈkā(ˌ)lēz\

Definition of Heterotrichales

: an order of yellow-green algae comprising all those with cells arranged in simple or branching filaments and including the single family Tribonemaceae

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History and Etymology for Heterotrichales

New Latin, from heter- + trich- + -ales

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