Ulva

prop. n.

1.

(Bot.) A genus of thin papery bright green seaweeds including the kinds called sea lettuce.

Noun

1.

Ulva - type genus of the family Ulvaceae; green seaweed having a thallus two cells thick: sea lettuce Synonyms: genus Ulva

family Ulvaceae, genus Ulva, laver, protoctist genus, sea lettuce, sea-lettuce family, Ulvaceae