oncidium[än sid′ē əm]
oncidium definition by Webster's New World
Origin: Modern Latin ; from Classical Greek onkos, barbed hook (for Indo-European base see ankle) plush Modern Latin -idium (; from Classical Greek -idion, diminutive suffix): from form of the labellum
oncidium definition by American Heritage Dictionary
Origin: New Latin Oncidium, genus name : Greek onkos, barb, hook (from the shape of its labellum) + New Latin -idium, diminutive suff. (from Greek -idion).