crystal

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Related to crystallizes: Fractional crystallization

crystal

 [kris´t'l]
a homogeneous angular solid of definite form, with systematically arranged elemental units.
hydroxyapatite crystal microscopic crystals of hydroxyapatite occurring in joints or bursae in a variety of connective tissue disorders.

crys·tal

(kris'tăl),
A solid of regular shape and, for a given compound, characteristic angles, formed when an element or compound solidifies slowly enough, as a result either of freezing from the liquid form or of precipitating out of solution, to allow the individual molecules to take up regular positions with respect to one another.
[G. krystallos, clear ice, crystal]

crystal

Drug slang A popular term for a crystallized form of methamphetamine; PCP; amphetamine; cocaine Urology Kidney stone, see there Vox populi A formed structure, often composed of a single type of material, which has a characteristic appearance by LM. See Birefringent crystal, Calcium oxalate crystal, Charcot-Leyden crystal, Coffin lid crystal, Hemoglobin C crystal, Jackstraw crystal, Lead crystal, Parking lot crystal, Piezoelectric crystal, Reinke crystal, Rhomboid crystal, Space crystal, Uric acid crystal, Washington monument crystal.

crys·tal

(kris'tăl)
A solid of regular shape and, for any given compound, characteristic angles, formed when an element or compound solidifies slowly enough, as a result either of freezing from the liquid form or of precipitating out of solution, to allow the individual molecules to take up regular positions with respect to one another; can be seen in body fluids.
[G. krystallos, clear ice, crystal]

crys·tal

(kris'tăl)
A solid of regular shape and, for a given compound, characteristic angles, formed when an element or compound solidifies slowly enough, as a result either of freezing from the liquid form or of precipitating out of solution, to allow the individual molecules to take up regular positions with respect to one another.
[G. krystallos, clear ice, crystal]
References in periodicals archive ?
Dicalcium phosphate anhydrous (DCPA), Ca[HPO.sub.4], crystallizes in the triclinic space group, P1, with a = 6.910(1) [Angstrom], b = 6.627(2) [Angstrom], c = 6.998(2) [Angstrom], [alpha] = 96.34(2)[degrees], [beta] = 103.82(2)[degrees] and [gamma] = 88.33(2)[degrees], Z = 4 (42).
Under proper conditions, NR molecules nest together tightly or crystallize; crystallization is accompanied by a decrease in volume.
If bottle-grade PET did crystallize it would become cloudy and, more importantly, it would lose its impact resistance.
From the results of TEM, it was found that nylon 11 11 crystallizes as elongated lamellar crystals, while other odd-odd nylons show multilayered lamellae.
This is in agreement with the fact that PBT crystallizes well under conditions of injection molding.
Vekilov and Siu-Tung Yau at the University of Alabama in Huntsville used an atomic force microscope to view the protein apoferritin as it crystallizes. Previous efforts at direct observation of nucleation in solution were thwarted because the crucial process can take place anywhere in the liquid and it happens very quickly.
A new underwater pelletizing system also crystallizes PET pellets aa they are dried.
To help elucidate how calcite fulfills it svaried roles, researchers have developed a new technique for observing hitherto hidden details of the way calcite crystallizes and dissolves.
Grade AN001 crystallizes slowly, so that thicker-walled bottles can now be blow molded without sacrificing clarity.