ˌperənōspəˈrāsēˌē noun plural
Usage: capitalized
Etymology: New Latin Peronospora, type genus + -aceae
: a family of parasitic fungi (order Peronosporales) in which the conidiophores form outside the epidermis of the host and develop conidia or sporangia singly or in clusters but never in chains — see downy mildew
• per·o·no·spo·ra·ceous | ̷ ̷ ̷ ̷ ̷ ̷ ̷ ̷|rāshəs adjective