hydrilla From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounAn aquatic plant, Hydrilla verticillata Related wordsSynonymshydrilla verticillatawaterthymewaterplantswampweedwater violethydrophyllumwaterleafwater hyacinthhydrangeaawlwortmud plantainwaterwheel plantflatweedalligatorweedhortensiaverticordia References Wiktionary — hydrilla Wikipedia — hydrilla