ver·ti·cil·li·um \ˌ ̷ ̷ ̷ ̷ˈsilēəm\noun Etymology: New Latin, from verticill- 1.capitalized: a genus of imperfect fungi (order Moniliales) having conidia borne singly at the apex of whorled branchlets and including several that cause destructive wilts in plants — see verticilliosis 2.-s: a fungus of the genus Verticillium