1. A colorless crystalline compound extracted from logwood that is used as a dye and stain in microscopy and histology, especially for staining cell nuclei blue or purple.
Usage: technical; chemistry; biology

Examples

• Hematoxylin is one of the most widely used stains in medical laboratories.
• The pathologist used hematoxylin and eosin to prepare the tissue sample for examination.
• Under the microscope, the cell nuclei appeared dark blue after hematoxylin staining.
• Hematoxylin is derived from the heartwood of the logwood tree.
• The histology technician applied hematoxylin to highlight the tissue structure.