noun Ptero·ste·mon \-ˈstēmən\

Definition of Pterostemon

  1. :  a genus of Mexican shrubs (family Saxifragaceae) having pubescent twigs, alternate dentate leaves, showy white perfect flowers in cymes, and capsular fruit

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Origin and Etymology of pterostemon

New Latin, from pter- + Greek stēmōn warp, thread — more at stamen

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a rounded knoll or a ridge of ice

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