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Any of numerous tropical American orchids of the genus Oncidium, having clusters of showy flowers.
[New Latin Oncidium, genus name : Greek onkos, barb, hook (from the shape of its labellum) + New Latin -idium, diminutive suff. (from Greek -idion).]
(Plants) an American orchid with small yellow and brown clusters of flowers
on•cid•i•um(ɒnˈsɪd i əm)
any of numerous American orchids of the genus Oncidium, having clusters of showy flowers.
[< New Latin (1800)]
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|Noun||1.||oncidium - any orchid of the genus Oncidium: characterized by slender branching sprays of small yellow and brown flowers; often grown as houseplants|
orchid, orchidaceous plant - any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors
genus Oncidium - large genus of showy epiphytic or lithophytic or terrestrial orchids of tropical and subtropical America