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
From the M-W Editors
Origin and Etymology of hydrilla
New Latin, probably from Latin Hydra Hydra
First Known Use: 1969
Learn More about hydrilla
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See words that rhyme with hydrilla Britannica.com: Encyclopedia article about hydrilla
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