Purple laver seaweed pressed into thin sheets.

red algae that is often dried and used to wrap sushi.

Thin dry sheets of seaweed used in Japanese cooking. It is mainly used to wrap sushi and as garnish for other cold presentations. See "Seaweed sheets, dried."

dried seaweed which comes in very thin sheets.

(NOR-ee) – The Japanese name for a flat blade-like red seaweed belonging to the genus Porphyra.  Nori, which is usually sold as a rectangular sheet measuring 19 x 21 cm, is the most commonly eaten alg [..]

Thin dry sheets of seaweed used in Japanese cooking. It is mainly used to wrap sushi and as garnish for other cold presentations. See "Seaweed sheets, dried."

dried, compressed seaweed

海苔 - laver, edible seaweed, in particular the paper-like dried product made from it

is a thin black or dark purple sheets of a dried sea vegetable. When roasted nori turns green. This is used as the wrapper around sushi.

Your sushi is rolled up in sheets of this dried, salty-sweet, edible seaweed.

海苔 – laver – paper-like sheets of seaweed.

National Oceanographic Research Institute (Rep. Korea)

(noh-ree) – Sheets of dried seaweed used in maki.

The Japanese name for a flat blade-like red seaweed belonging to the genus Porphyra. Nori, which is usually sold as a rectangular sheet measuring 19 x 21 cm, is the most commonly eaten alga in Japan. [..]

From Japanese 儀 (nori) meaning "ceremony, rites" or other kanji that are pronounced the same way.