cyˈcadeous,a.Bot. [f.mod.L. Cycade-æ=Cycadaceæ(seeprec.) + -ous.] =prec. 1847Ansted Anc. World ix. 198 The ancient shores..clothed with cycadeous vegetation.1851Richardson Geol. (1855) 169 Such a specimen is to be referred to some coniferous or cycadeous plant.