Any of various brown seaweeds of the order Laminariales, often growing very large and forming dense beds.
The ashes of seaweed, formerly used as a source of potash and iodine.
Any of an order (Laminariales) of large, coarse, brown algae.
Ashes of seaweed, from which iodine is obtained.
Any of various brown, often very large seaweeds that grow in colder ocean regions. Kelps are varieties of brown algae of the order Laminariales, with some species growing over 61 m (200 ft) long. Kelps are harvested as food (primarily in eastern Asia), as fertilizer, and for their sodium and potassium salts, used in industrial processes. Kelps are also a source of thickening agents and colloid stabilizers used in many commercial products.
Origin of kelp
Middle English culp