Definition of kelp in US English:

kelp

noun

  • 1A large brown seaweed that typically has a long, tough stalk with a broad frond divided into strips. Some kinds grow to a very large size and form underwater “forests” that support a large population of animals.

    Family Laminariaceae, class Phaeophyceae, including the genera Laminaria (used in some areas as manure) and Macrocystis (harvested in the US as a source of algin)

    • ‘In terms of biomass, organic carbon fixation, space occupation, and biogenic habitat, kelps are the dominant reef-inhabiting organisms in cool seas, especially in the Northern Hemisphere.’
    • ‘Other commonly used seaweeds are wakame and kombu, which are types of kelp.’
    • ‘Octopus bimaculatus lives in holes, under rocks and among kelps and is found in the Pacific waters around California and Mexico.’
    • ‘You may also want to eat iodine-rich foods like kelp, nori, and other seaweeds as often as once a day, and fish and shellfish two or three times a week.’
    • ‘And our southern waters are incredibly diverse with beautiful sea dragons and hand fish and over a 1000 different varieties of colourful kelp and algae and amazing fish.’
    • ‘Apart from algae, perhaps we can also bioengineer seaweed or kelp for the same purpose in aquatic fuel farms.’
    • ‘The sea bed was covered by fronds of kelp which swayed to and fro in the water, grabbing our legs as we began our course around the pier's outer edge.’
    • ‘These delicate fish are poor swimmers, but use their leaf-like appendages to help them blend into the algae and kelp surrounding them for protection from predators.’
    • ‘The valued molluscs are fed hand-harvested kelp and some compounded seaweed diet, and are graded at regular intervals over the farming period of 36 to 40 months.’
    • ‘Flocks of terns and cormorants fished offshore, while fronds of kelp writhed in the surf like the flailing arms of sea monsters.’
    • ‘Below us the seabed was strewn with small boulders and overgrown with beds of brown kelp.’
    • ‘As it swims over different areas of seabed, a cuttlefish can change colour almost instantly to match its surroundings, taking on a dark brown shade over kelp and turning almost white over sand.’
    • ‘Two wholesome brown kelps that are popular among Japanese diners are kombu and arame.’
    • ‘In aquatic habitats, bryozoans may be found on all types of hard substrates: sand grains, rocks, shells, wood, and blades of kelps and other algae may be heavily encrusted with bryozoans.’
    • ‘By devising experiments with and without herbivores, they were able to observe the maximum effect of herbivores on small kelps.’
    • ‘Other chromists, such as the large kelps, are attached to the bottom of the ocean, but are so incredibly large that they may reach to the surface, and form kelp forests in the ocean.’
    • ‘Giant kelp and seaweed are common, especially in intertidal zones.’
    • ‘Unlike kelp and other seaweed, sea grasses are descended from terrestrial plants, which adapted to shallow non-rocky coastal waters.’
    • ‘Many large kelps use gas-filled floatation bladders to keep their large blades near the surface, and therefore in the light.’
    • ‘The elimination of sea otters for their pelts allowed explosions of sea urchins that ate all the kelps.’
    1. 1.1 The calcined ashes of seaweed, used as a source of various salts.
      • ‘I apply an organic fertilizer high in trace elements and kelp.’

Origin

Late Middle English: of unknown origin.

Pronunciation

kelp

/kelp//kɛlp/