conch

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conch

(kŏngk, kŏnch, kôngk), common name for certain marine gastropodgastropod,
member of the class Gastropoda, the largest and most successful class of mollusks (phylum Mollusca), containing over 35,000 living species and 15,000 fossil forms.
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 mollusks having a heavy, spiral shell, the whorls of which overlap each other. In conchs the characteristic gastropod foot is reduced in size and the operculum, a horny plate located on the foot and used to seal the shell opening in many gastropods, has the appearance and function of a claw. During locomotion, the operculum secures a foothold in the sand, and the conch jumps forward by means of the quick contraction of a retractor muscle called the columella muscle. Thus the conch lacks the creeping motion of most gastropods. The king conch, Strombus gigas, found in the warmer waters of the Atlantic, Caribbean, and Gulf of Mexico, has a shell 10 to 12 in. (25–30 cm) long and may weigh up to 5 lb (2.3 kg). Similar in size and distribution is the queen conch, Cassis cameo. Its shell has been used in Europe to carve cameos. Conch shells range in color from white to red; they have been used by humans to fashion a number of items, such as buttons, ornaments, or the crude trumpets made from the shell of the trumpet conch, Charonia tritonis. This conch is similar in shape to the king and queen conchs but is much more slender and reaches a length of 20 in. (50 cm). C. tritonis is found in the Gulf of Mexico and the Indian Ocean. The largest conch and also one of the largest univalves in the world is the horse conch, Pleuroploca gigantea, having a shell length of 24 in. (60 cm). It is found along the Atlantic Coast from North Carolina to Brazil. The body can retreat entirely into the shell and remain there for months if unfavorable conditions prevail. An unusual conch shell is that of the spider conch, Lambis lambis, which has leglike projections. Spider conchs are voracious carnivores, common on coral reefs. They also feed on algae, as do the king conchs. Most conchs are carnivorous, feeding on bivalve mollusks; some are scavengers as well. They inhabit tropical waters and have been used as a food source for man. The conch is classified in the phylum MolluscaMollusca
, taxonomic name for the one of the largest phyla of invertebrate animals (Arthropoda is the largest) comprising more than 50,000 living mollusk species and about 35,000 fossil species dating back to the Cambrian period.
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, class Gastropoda, order Mesogastropoda.

Conch

Semidome vaulting of an apse or eastern end of a church.

conch

[käŋk]
(invertebrate zoology)
The common name for several species of large, colorful gastropod mollusks of the family Strombidae; the shell is used to make cameos and porcelain.

conch

The domed roof of a semicircular apse.

conch

1. any of various tropical marine gastropod molluscs of the genus Strombus and related genera, esp S. gigas (giant conch), characterized by a large brightly coloured spiral shell
2. the shell of such a mollusc, used as a trumpet
References in periodicals archive ?
Scientists in Germany attempted to shorten the conventional conching process by omitting the dry conching phase and replacing it with a short or continuous liquefaction process.
Basically, a fine chocolate is the end result of combining the best quality ingredients -- cocoa butter, milk, cream, cocoa solids and no vegetable oils -- and the diligence of the blending and conching (the method by which the cocoa beans are ground).
Knowledgeable, friendly tour guides explain the history of the company as well as cocoa bean growing, harvesting, fermenting, conching, tempering, and molding.
For sweets lovers, the Chocolate Club's chocolatiers hand craft gourmet chocolates using secret cocoa bean blends, roasting and conching techniques.
Following analytical and sensory experiments on a range of commercially available cocoa liquors, De Zaan cocoa liquor was selected for trials on conching involving major European chocolate manufacturers.
For those with a sweet tooth, the Chocolate Club's world class chocolatiers hand make gourmet chocolates using secret cocoa bean blends, roasting and conching techniques.
Their main ranges of equipment are Chocolate Refining and Conching Machinery, Storage Tanks, Pump, Pipework, Batch and Continuous Tempering Machines, Chocolate Moulding Plants of all descriptions, Enrobing Machines, Panning Systems, Flake Plants, Fat Melters, Powder Feeds, Pick & Place Handling Systems, Kibblers, Vermicelli Plants, Drop & Chip Plants, Spinning Machines, Nut Cluster Machines, Aerators, Cooker/Mixers, etc.
The chapters on cocoa production, milk component cleaning, roasting and winnowing, particle size reduction, conching and non-conventional machines and processes have been completely all rewritten.
Jon Conching, the hotel's director of sales, added: "With new technology, were able to increase productivity and efficiency because of the capability to electronically transfer NAR's rooming list to the Hilton Hawaiian Village.
Buhler AG and Frisse recently supplied a complete mixing, refining and conching line for this plant.