hy·​dril·​la hī-ˈdri-lə How to pronounce hydrilla (audio)
: 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

Examples of hydrilla in a Sentence

Recent Examples on the Web Scientists have found everywhere along the 200 miles of the Connecticut River and its tributaries below Springfield: A previously undiscovered, genetically unique and exceptionally robust strain of hydrilla that so far has not been found anywhere else in the world. Edmund H. Mahony, Hartford Courant, 17 Jan. 2024 By early summer, assuming plants like hydrilla and milfoil have grown in, muskies will gravitate to weedy areas in roughly 3- to 8-feet of water. Joe Cermele, Field & Stream, 25 Apr. 2023 According to a presentation by the Central Arkansas Water officials, the Lake Maumelle hydrilla operation will include $16 million in herbicide application over five years and $23 million in dredging costs. Daniel McFadin, Arkansas Online, 12 Mar. 2023 Buzzbaits, chatterbaits and spinnerbaits are all effective in scattered grass, while weedless frogs do the job in thicker hydrilla and weed mats. Frank Sargeant, al, 1 Oct. 2021 Subjecting hydrilla to three hard freezes causes the nodes to burst, which neutralizes spreading. Bryan Hendricks, Arkansas Online, 30 Oct. 2022 One is Central Arkansas Water's plan to eliminate hydrilla in the lake. Bryan Hendricks, Arkansas Online, 30 Oct. 2022 The weed is hydrilla, an aquatic plant initially imported and sold as an aquarium plant in the 1950s that has become one of the world’s most invasive plants. From Usa Today Network and Wire Reports, USA TODAY, 30 Nov. 2021 Some fish are also being caught on the outside of the hydrilla beds on flukes and swimjigs. Frank Sargeant, al, 27 Aug. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hydrilla.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin, probably from Latin Hydra Hydra

First Known Use

1872, in the meaning defined above

Time Traveler
The first known use of hydrilla was in 1872

Dictionary Entries Near hydrilla

Cite this Entry

“Hydrilla.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrilla. Accessed 12 Apr. 2024.

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