plural noun Dic·ty·o·siphonales \ˌdiktēə+\

Definition of Dictyosiphonales

  1. :  an order of brown algae having a profusely branched cylindrical sporophyte which at maturity is differentiated internally into two or three regions

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Origin and Etymology of dictyosiphonales

New Latin, from Dictyosiphon + -ales

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feeling or affected by lethargy

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