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haematoxylin

/ ˌhɛm-; ˌhiːməˈtɒksɪlɪn /

noun

  1. a colourless or yellowish crystalline compound that turns red on exposure to light: obtained from logwood and used in dyes and as a biological stain. Formula: C 16 H 14 O 6 .3H 2 O
  2. a variant spelling of haematoxylon
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of haematoxylin1

C19: from New Latin Haematoxylon genus name of logwood, from haemato- + Greek xulon wood + -in
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Example Sentences

The stain which brought out the cells with greatest clearness was copper haematoxylin.

By this means the colouring principle haematoxylin which logwood contains is changed into the true colouring matter haematen.

This reaction of haematoxylin is exceedingly rapid and delicate, rendering that body a laboratory test for alkalis.

By the action of hydrogen and sulphurous acid, haematein is easily reduced to haematoxylin.

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haematothermalhaematoxylon