ˌdeməˌrestēˈā(ˌ)lēz, ˌdām-, -schēˈā- noun plural
Usage: capitalized
Etymology: New Latin, from Desmarestia + -ales
: an order of much-branched brown algae (class Heterogeneratae) with a single growing apex to each filament and complex pseudo-parenchymatous specialization of the basal part of the thallus — see desmarestia