crystal violet

violet /vi·o·let/ (vi´o-let)

1. the color produced by the shortest waves of the visible spectrum, beyond indigo, approximately 380 to 420 nm.

2. a dye or stain with this color.

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crystal violet , gentian violet, methyl violet gentian violet; see under gentian.

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crystal violet

n.

A dye derived from gentian violet that is used as a general biological stain, an acid-base indicator, and an agent against infection by bacteria, fungi, pinworms, and other parasites.

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crystal

a naturally produced angular solid of definite form.

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crystal-associated hepatopathy

see crystal-associated cholangiohepatopathy.

crystal-induced arthritis

see gout, pseudogout.

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

see gout, pseudogout.

tissue crystal

recognizable crystals in tissues occur in crystal-associated cholangiohepatopathy, zinc and oxalate poisoning.

urines c's

see crystalluria.

crystal violet

a brilliant organic deep purple dye.

crystal violet vaccine

an obsolete hog cholera (classical swine fever) vaccine.