(ˌ)alˌbyüjəˈnāsēˌē noun plural
Usage: capitalized
Etymology: New Latin, from Albugin-, Albugo, type genus + -aceae
: a family of fungi (order Peronosporales) that produce whitish blisterlike conidial sori on certain flowering plants and that reproduce by forming conidia in chains within the sori or by producing oospores within the affected host tissue — compare white rust