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

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

Examples of hydrilla in a Sentence

Recent Examples on the Web 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 Wilde suspects one local source might be an herbicide, diquat dibromide, that is used to kill hydrilla. Erik Stokstad, Science | AAAS, 25 Mar. 2021 The big worms are worked in and around the edges of thick hydrilla beds or other cover. Shannon Tompkins, Chron, 11 June 2021 From Lake Guntersville, Captain Mike Gerry reports good action at dawn on Tight-Line swim jigs, Picasso Spinner baits and SPRO frogs around the eel grass and hydrilla. Frank Sargeant, al, 4 June 2021 These carp live several years and eat the hydrilla, but are unable to reproduce. Sarah Zhang, The Atlantic, 25 Mar. 2021 When native vegetation is stripped, other invasive species, like hydrilla, can move in and make the area homogenous. Ayana Archie, The Courier-Journal, 25 Mar. 2021 Those fed hydrilla with the cyanobacteria got brain lesions like the eagles. Sarah Zhang, The Atlantic, 25 Mar. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hydrilla.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of hydrilla

1872, in the meaning defined above

History and Etymology for hydrilla

New Latin, probably from Latin Hydra Hydra

Learn More About hydrilla

Time Traveler for hydrilla

Time Traveler

The first known use of hydrilla was in 1872

See more words from the same year

Dictionary Entries Near hydrilla




See More Nearby Entries 

Statistics for hydrilla

Cite this Entry

“Hydrilla.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrilla. Accessed 13 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on hydrilla

Britannica.com: Encyclopedia article about hydrilla


Test Your Vocabulary

Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!