1. A colorless crystalline compound extracted from logwood that is used as a dye and stain in microscopy and histology.
Usage: Also spelled hematoxylin (U.S. variant).; Primarily used in scientific and medical contexts.

Examples

• Haematoxylin is commonly used in laboratory staining procedures to color tissue samples.
• The pathologist applied haematoxylin to the microscope slide to highlight cellular structures.
• Haematoxylin and eosin staining is the standard method for preparing histological specimens.
• The dye haematoxylin produces a blue-purple color when oxidized to hematein.
• Medical students learn to identify tissues stained with haematoxylin under the microscope.