1. an aquatic plant with finely divided submerged leaves, typically found in ponds and slow-moving water
Usage: botanical

Examples

• The pond was filled with hornwort that provided oxygen for the fish.
• Hornwort is a popular choice for aquarium plants because it grows quickly.
• The biologist collected samples of hornwort from the lake for study.
• Hornwort can help control algae growth in water gardens.
• The dense hornwort created shelter for small aquatic animals.
• Many aquarists use hornwort as a natural water filter.