- a crystalline derivative of thiazine used as a violet dye to stain microscope specimens
- any of a class of related dyes
Collins Concise English Dictionary © HarperCollins Publishers::
thionine /ˈθaɪəʊˌniːn; -ˌnaɪn/, thionin /ˈθaɪənɪn/ n
'thionine' also found in these entries (note: many are not synonyms or translations):