ˌpəlyəˈla(a)rēə noun
Usage: capitalized
Etymology: New Latin, from Latin pullulare + New Latin -aria
: a genus of fungi (family Pseudosaccharomycetaceae) forming yeastlike colonies that are at first dirty white, then streaked with dark green or black, and eventually wholly black and more or less leathery and including a form ( P. pullulans ) that causes discoloration of pulp and paper