hydrilla
noun
hy·dril·la
hī-ˈdri-lə 
: 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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The Army Corps has recorded large declines in the amount of invasive hydrilla, with minimal impacts to native plants, as a result of that application.
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John Moritz, Hartford Courant, 12 Aug. 2025
Aquatic vegetation like eelgrass, hydrilla and duckweed are crucial to the ecology of a spring.
—Kathryn Varn, Axios, 2 Aug. 2024
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John Moritz, Hartford Courant, 12 Aug. 2025
Aquatic vegetation like eelgrass, hydrilla and duckweed are crucial to the ecology of a spring.
—Kathryn Varn, Axios, 2 Aug. 2024
See All Example Sentences for hydrilla
Cite this Entry
“Hydrilla.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrilla. Accessed 11 Sep. 2025.
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