Chem. [a. G. vesuvin, f. Vesuv-ius, from its explosive property: see -IN1.] Phenyl-brown, used esp. as a staining matter for histological preparations.
1885. Klein, Micro-Organisms, 84. Stained with methylene blue and vesuvin.
1886. Buck’s Handbk. Med. Sci., III. 678/1. Bismarck Brown, Vesuvin. The chloride of triamidoazobenzol.
1897. Allbutt’s Syst. Med., II. 4. Bismarck brown, eosin, or vesuvin may be used as a counter stain.
