First Known Use: 1969
Dictionary
hydrilla
noun hy·dril·la \hī-ˈdri-lə\
Definition of HYDRILLA
: a freshwater aquatic Asian plant (Hydrilla verticillata of the Hydrocharitaceae family) that has small narrow leaves growing in whorls of three to eight around stems which become heavily branched near the water surface
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Origin of HYDRILLA
New Latin, probably from Latin Hydra Hydra
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