Lemnaceae
plural noun
Lem·na·ce·ae
lemˈnāsēˌē
: 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
lemnaceous
adjective
(ˈ)lem¦nāshəs
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Merriam-Webster unabridged
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