- 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
- a variant spelling of haematoxylon
C19: from New Latin Haematoxylon genus name of logwood, from haemato- + Greek xulon wood + -in
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
Examples from the Web for haematoxylin
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.