Also found in: Medical.
py·ro·nin(pī′rə-nĭn) also py·ro·nine (-nēn′)
Any of a group of xanthene dyes used as a biological stain, especially to detect or track the presence of RNA by staining it red.
[German Pyronin, originally a trademark.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a xanthine dye used for detecting the presence of RNA.
[1890–95; < German Pyronin, orig. a trademark]
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