from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A submersed Old World Plant (Hydrilla verticillata) having whorled, lance-shaped leaves and unisexual, solitary, axillary flowers.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An aquatic plant, Hydrilla verticillata

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. submersed plant with whorled lanceolate leaves and solitary axillary flowers; Old World plant naturalized in southern United States and clogging Florida's waterways


from The American Heritage® Dictionary of the English Language, 4th Edition

New Latin, genus name, diminutive of Latin hydra, hydra; see hydra.


  • For example, when Dr. Melnick and his colleagues met recently with fishermen, they discussed the invasive plant hydrilla, which is choking the river leading into Laguna Limón, a once-valuable fishing resource, and the lagoon itself. - News

  • Somewhere along the way, invasive plant species such as hydrilla and giant salvinia took up residence, threatening to choke the lake and its creatures to death. - Highschool

  • "New Zealand mud snails and plants such as hydrilla are on our radar screen," said Thayer.

    Tahoe Daily Tribune - Top Stories

  • Haralson requested $60,000 from the commission to be used to hire a private company to spray to eradicate exotic weeds, such as hydrilla and milfoil, from the Roseberry Creek area of Lake Guntersville.

    The Daily Sentinel: News

  • TP&W assured anglers that the grass carp that were released were sterile and after eating a lot of the hydrilla they would eventually die-off.

    Is This The New World-Record Largemouth?

  • Well the owners of all these big homes decided that they didn't like the hydrilla growing around their docks because they thought it was nasty looking and I guess they didn't like having to clean it off the props on their big cruisers.

    Is This The New World-Record Largemouth?

  • They convinced the Texas Parks and Wildlife to introduce grass carp, from Japan no less, to clean-out the hydrilla.

    Is This The New World-Record Largemouth?

  • Details: I really like these lures for working around hydrilla.

    Favorite Lures of the Striper Guides

  • My brother-in-law and I were flipping some hydrilla on Lay Lake.

    Death by Sinker

  • Once there, I saw that getting into position to make a cast required wading out about 30 feet through cattails, spatterdock, hydrilla, and God knows what else.

    A Sportman's Life: A Sinking Feeling


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