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.

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

/crys·tal/ (kris´t'l) a homogeneous angular solid of definite form, with systematically arranged elemental units.
blood crystals  hematoidin crystals in the blood.
Charcot-Leyden crystals  elongated, diamond-shaped, birefringent crystals derived from disintegrating eosinophils, seen in serous fluids such as the bronchial secretions in asthma and in stools in some cases of intestinal parasitism.

crystal

[kris′təl]
Etymology: Gk, krystallos
a solid substance, either organic or inorganic, the atoms or molecules of which are arranged in a regular, repeating three-dimensional pattern, which determines the shape of a crystal. crystalline, adj.

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]

crystal,

n distinctive form of molecule created when an element or chemical compound is frozen or slowly solidified. Each element or compound has a unique structure often used in gem healing and in amulets of pendulum.

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(s),

n a naturally produced solid. The ultimate units of the substance from which it was formed are arranged systematically.

crystal

a naturally produced angular solid of definite form.

crystal-associated hepatopathy
crystal-induced arthritis
piezoelectric crystal
the source of sound waves in ultrasonography.
radiographic c's
crystals on radiographs caused by faulty use of fixative, commonly excess acidity or insufficient washing of the film.
synovial crystal
tissue crystal
recognizable crystals in tissues occur in crystal-associated cholangiohepatopathy, zinc and oxalate poisoning.
urines c's
crystal violet
a brilliant organic deep purple dye.
crystal violet vaccine
an obsolete hog cholera (classical swine fever) vaccine.
References in periodicals archive ?
To keep up with their growth ambitions, Crystal Clear have joined enterprise support agency Business in Focus's profit+ programme, which has been designed to provide support for companies wishing to make the next step in their development.
Acculynk also announced today that Austin, Texas-based Crystal Clear Payments will serve as a channel partner, extending Payzur's consumer base.
Crystal Clear MD Sharon Hilditch, right, who heads the Everywoman team in aid of the charity, Refuge, is offering all Everywoman runners a gift voucher to spend at her Crystal Clear Skin Clinic on Rodney Street as a thank you.
By mid-to-late August, Crystal Clear will move distribution and logistics operations of its giftware and dinnerware divisions to a non-company-owned facility in Edison.
Crystal Clear Oxygen Therapy, as practised by Huddersfield beauty therapist Doreen Reid, promises instantly fresher, firmer, clearer skin.
And it's not just Mrs Beckham who likes a Crystal Clear Oxygen facial.
It's becoming crystal clear that DUMBO is a design destination," said.
The Crystal Clear method sprays a fine cloud of micronized oxide crystals on to the skin, killing off dead cells that make it look dull and old.
Crystal Clear Technologies is eligible to participate in the program as a woman-owned small business.
LIVERPOOL skincare company Crystal Clear has raised its profile after Selfridges invited it to sell its goods in its UK chain and in Dublin's highly-respected Brown Thomas store.
Without needles or surgery, the Crystal Clear eye pen provides an instant eyelift in seconds.
13 will reopen the more than 5,000-square-foot showroom, which has been updated to showcase the Crystal Clear, Fifth Avenue Crystal, Design Guild, Medallion, Celebrations and Fifth Avenue Lighting lines under a new corporate handle, Crystal Clear Home.