nacre


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nacre:

see mother-of-pearlmother-of-pearl
or nacre
, the iridescent substance that forms the lining of the shells of some fresh-water and some salt-water mollusks. Like the pearl it is a secretion of the mantle, composed of alternate layers of calcium carbonate and conchiolin.
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nacre

[′nā·kər]
(invertebrate zoology)
An iridescent inner layer of many mollusk shells.
References in periodicals archive ?
The conclusions made from the present study were limited by the use of live oysters, which prevented the measurement of the internal nacre area, nacre thickness, and weight of the soft tissue and shell.
Perfume, makeup and hairspray contain ingredients that can eat away the nacre, permanently dulling it.
While Fecteau has developed relationships with the Doris Humphrey Institute, the Sokolow Dance Foundation, and the American Dance Legacy Institute, she hopes that in future, the work of modern masters will be made more accessible to small companies like Nacre.
A seven-night stay at Camping de la Cote de Nacre in Normandy from April 17 2009 costs pounds 245 per family based on two adults and all children in a two-bedroom mobile home, rising to pounds 1,031 per family from July 24, 2009.
Nacre is made of about 95 percent aragonite, a form of a calcium carbonate, and 5 percent organic material (SN: 1/28/06, p.
Natural nacre owes much of its strength to an internal brick-like structure.
To produce a cultured pearl, a bead is inserted into the gonad of a mature oyster, using a bit of mantle tissue from another oyster to help initiate nacre production.
Benjamin, as a writer, was like a reverse oyster, secreting some tiny drop of nacre and then embedding it in thicker and thicker layers of sand, to be picked apart grain by grain.
Nacre is the best known and most thoroughly studied calcareous fabric in mollusc shells (Taylor et al.
L ' Etui de nacre ( The Mother - of - Pearl Box, 1892).
TRONDHEIM, Norway -- International energy company Statoil has partnered with SINTEF, Scandinavia's largest independent research organization, and Nacre, developers of award-winning intelligent hearing protection and communication technology, to create the next generation of intelligent hearing protection and communication technologies for use in the offshore oil and gas industry.