1. Plural of hydrilla; aquatic plants of the genus Hydrilla, characterized by small leaves and submerged or floating stems, often found in freshwater environments.
Usage: Typically used in botanical or ecological contexts; Often discussed as an invasive species in certain regions

Examples

• The lake's ecosystem was disrupted by the rapid spread of hydrillas.
• Hydrillas are commonly used in aquariums for their decorative appearance.
• Environmental agencies work to control hydrillas in native waterways.
• The dense mats of hydrillas can block sunlight from reaching the lake bottom.
• Hydrillas reproduce both sexually and vegetatively, making them difficult to eradicate.