noun
type genus of the family Ulvaceae; green seaweed having a thallus two cells thick: sea lettuce
• Syn: ↑Ulva
• Hypernyms: ↑protoctist genus
• Member Holonyms: ↑Ulvaceae, ↑family Ulvaceae, ↑sea-lettuce family
• Member Meronyms: ↑sea lettuce, ↑laver
Useful english dictionary. 2012.