- any of several Mexican and Central American palmlike plants belonging to the genus Dioon, of the cycad family, having a crown of stiff, pinnate leaves.
Origin of dioon
< New Latin (1843) < Greek di- di-1 + ōión egg; so named because the seeds are borne in pairs
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Examples from the Web for dioon
Dioon, a genus of Cycads, natives of Mexico, where meal is prepared from the starchy seeds.The New Gresham Encyclopedia