Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An aquatic plant (Hydrilla verticillata) native to Eurasia, Africa, and Australia, having whorled, lance-shaped leaves and small white flowers. It is considered a weed in North America, where it forms large dense mats in waterways.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun An aquatic plant, Hydrilla verticillata

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

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

Etymologies

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

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

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Examples

  • 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.

    post-gazette.com - News 2009

  • 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.

    statesman.com - Highschool 2010

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

    North Lake Tahoe Bonanza - Top Stories By Matthew Renda North Lake Tahoe Bonanza 2010

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

    Tahoe Daily Tribune - Top Stories By Matthew Renda North Lake Tahoe Bonanza 2010

  • 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.

    statesman.com - Highschool 2010

  • 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 2009

  • 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 2009

  • 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 2009

  • 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 2009

  • 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 2009

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