Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun hydrilla
1 sense of hydrilla
Sense 1
hydrilla, Hydrilla verticillata -- (submersed plant with whorled lanceolate leaves and solitary axillary flowers; Old World plant naturalized in southern United States and clogging Florida's waterways)
=> aquatic plant, water plant, hydrophyte, hydrophytic plant -- (a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth)