crystal

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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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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]
Farlex Partner Medical Dictionary © Farlex 2012

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.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

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]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
The Crystal Quiz presents the user with 48 crystals to choose from.
All naturally occuring crystals have some level of impurities in them.
Based on the fact and according to the characteristic that KDP crystal is deliquescent [10], we proposed a new ultraprecision machining technology for KDP crystals, that is, polishing technology for KDP crystals based on deliquescent action, which utilizes deliquescent action for ultraprecision machining KDP crystals.
In 2009, the students were challenged to grow crystals using a maximum of 100 grams of aluminum potassium sulphate with the aim to grow the clearest ice-like crystals.
"The crystals' growth is completely opposite than what we expected."
The development of this science in the twentieth century must be considered one of the most remarkable developments in the whole history of science because, again, it provided a connection between the diffraction pattern and the structure of the crystals, or the arrangement of the atoms in the crystal.
Acicular actinolite crystals occur in pale green, felted masses to dark green semi-parallel clusters of coarse needles, and as inclusions in orthoclase, quartz, titanite, apatite and other species at Alchuri.
Depending on the temperature of the air and ground, snow crystals change size and shape.
These rocks have an inner cavity covered in crystals (solids in which the atoms are lined up in a repeating pattern).
Charcot-Leyden crystals, considered to be a morphologic hallmark of eosinophil-related disease, are often also found in inflamed nasal tissue and paranasal sinus contents of patients with allergic rhinitis.
Ilexus Pty Limited (Heidelberg, Australia) has patented crystals, crystal structure Fc.gamma.RIIa protein, three dimensional coordinates of Fc.gamma.RIIa protein, and structures and models derived from the Fc.gamma.RIIa structure.