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n. Fucus vesiculosus, a seaweed in which iodine was first discovered.

n. the common black rock weed of the seacoast (Fucus nodosus and Fucus vesiculosus) -- called also bladder tangle. See Wrack.

n. similar to and found with black rockweed.

n. common black rockweed used in preparing kelp and as manure.

n. A seaweed, Fucus vesiculosus: so named from the floating-vesicles in its fronds. Also called bladder-kelp, sea-oak, and sea-wrack. See Fucus.

n. a common rockweed used in preparing kelp and as manure

n. similar to and found with black rockweed

"Fucus Vesiculosus, or bladderwrack is a seaweed rich in iodine, which, if used in safe quantities, can prevent under-active thyroid in the same way iodized salt does."

rockweed   

ascophyllum nodosum    black rockweed    bladder fucus    tang    fucus vesiculosus