Definition of "hematoxylin" [hem•a•tox•y•lin]

• A yellow or red crystalline compound, C16H14O6·3H2O, the coloring material of logwood, that is used in dyes, inks, and stains. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "For the pathologist faced with identifying an infectious microorganism on hematoxylin and eosin or special stain, the database offers an excellent set of control imagesor comparison."
• "Histological techniques, such as fixation procedures and tissue stainings (hematoxylin or carmine) had been introduced in the middle of the 19th century."
• "It was labeled: Lung, Cat, c.s., hematoxylin & eosin."