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[mass noun] A colourless compound present in logwood, which is easily converted into blue, red, or purple dyes and is used as a biological stain.
- ‘Inactive DNA is readily stained with hematoxylin, toluidine blue, and other similar basic dyes.’
- ‘Eight randomly selected sites from each inflation-fixed right lung were embedded in paraffin, and sections were cut for hematoxylin and eosin staining.’
- ‘Full-thickness articular cartilage core specimens were cut and stained with hematoxylin and eosin and safranin-O to analyze extracellular matrix morphology, as described.’
- ‘The specimens were cross-sectioned at a thickness of 5 [mu] m for staining with hematoxylin and eosin.’
- ‘Tissues are stained in aqueous hematoxylin after mordanting in iron ammonium sulfate (iron alum).’
Mid 19th century: from modern Latin Haematoxylum (genus name), from haemato- ‘of blood’ + Greek xulon wood.
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The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.