eggshell


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Related to eggshell: calcium carbonate

eggshell

1. the hard porous protective outer layer of a bird's egg, consisting of calcite and protein
2. a yellowish-white colour
3. (of paint) having a very slight sheen
4. of a yellowish-white colour
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

eggshell, eggshelling

A semimatte glaze or porcelain enamel surface resembling eggshell in texture; sometimes a defect.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
An example of the companies' environmentally friendly processes was the use of eggshells, which other producers usually discard after they use the rest of the egg to make cakes, biscuits and puff cakes.
Researchers have found an innovative way of using eggshells to support new bone tissue growth.
This is observed as a higher minimum and maximum torque of composites containing carbon black and silica compared to composites made with eggshells. Moreover, eggshell particles, in addition to being bigger than carbon black and silica, also had the highest density, so a lower volume of filler was used to achieve the same weight.
As the chick grows inside the eggshell, it needs calcium.
In modern birds, coloring on eggshells provides camouflage or diversion so that open-nesting birds can protect their children from potential predators.
No improvement in egg quality as observed in this experiment was unexpected because increased Ca and P utilization by dietary phytase have been reported to improve egg quality, especially for eggshell strength and thickness [20,21].
[7] experimentally measured the resonant frequency of an eggshell based on a theoretical formula for the effect of the dimensions of the eggshell and the modulus of elasticity on the resonant frequency.
The thermal treatment of the eggshell wastes as raw material can lead to the formation of an inexpensive and environmentfriendly basic catalyst.
Synthesis and chemical and structural characterization of hydroxyapatite obtained from eggshell and tricalcium phosphate