change of color, especially that due to variation in the temperature of a body.

1875–80; meta- + chromat- + -ism

metachromatic [met-uh-kroh-mat-ik, -kruh-] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
metachromatic (ˌmɛtəkrəʊˈmætɪk)
1.  (of tissues and cells stained for microscopical examination) taking a colour different from that of the dye solution
2.  (of dyes) capable of staining tissues or cells a colour different from that of the dye solution
3.  of or relating to metachromatism

metachromatism (ˌmɛtəˈkrəʊməˌtɪzəm)
a change in colour, esp when caused by a change in temperature
[C19: from meta- + chromato- + -ism]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

metachromatic met·a·chro·mat·ic (mět'ə-krō-māt'ĭk)

  1. Of or relating to metachromasia.

  2. Relating to the property of certain chemical substances to appear as different colors depending upon the wavelength of light under which they are viewed.

metachromatism met·a·chro·ma·tism (mět'ə-krō'mə-tĭz'əm)

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