ˌkad.əˈsēd.əm noun
Usage: capitalized
Etymology: New Latin, from cata- + Latin seta, saeta bristle + New Latin -um; from the appendages of the column — more at sinew
: a genus of tropical American orchids having globose expanded flowers in racemes and the column provided with a sensitive appendage that when touched releases the pollen suddenly from the stamens — see jumping orchid