Haematoxylin \H[ae]m`a*tox"y*lin\ (-t[o^]ks"[i^]*l[i^]n), n.
[See {H[ae]matoxylon}.] (Chem.)
The coloring principle of logwood. It is obtained as a yellow
crystalline substance, {C16H14O6}, with a sweetish taste.
Formerly called also {hematin}.
[1913 Webster]