hornwort

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. any aquatic plant of the genus Ceratophyllum;
forms submerged masses in ponds and slow-flowing streams
• Hypernyms:
aquatic plant, water plant, hydrophyte, hydrophytic plant
• Member Holonyms:
Ceratophyllum, genus Ceratophyllum
2. liverworts with slender hornlike capsules
• Hypernyms:
liverwort, hepatic
• Member Holonyms:
Anthocerotales, order Anthocerotales