plural noun Het·er·o·si·pho·na·les \¦hetərōˌsīfəˈnā(ˌ)lēz\

Definition of Heterosiphonales

  1. :  an order of yellow-green algae comprising the siphonaceous members of the class Xanthophyceae and including the single genus Botrydium

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Origin and Etymology of heterosiphonales

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

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a brief usually trivial fact

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