lemˈnāsēˌē noun plural
Usage: capitalized
Etymology: New Latin, from Lemna, type genus + -aceae
: a family of aquatic plants (order Arales) consisting of a single flat or thickened frond bearing a root or roots below and one or two naked flowers on the upper surface — see duckweed
• lem·na·ceous (ˈ)lem|nāshəs adjective