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Definition of Azolitmin
1. Noun. (organic compound) A purplish-red material, of uncertain composition, that is the principal colouring matter of litmus ¹
¹ Source: wiktionary.com
Medical Definition of Azolitmin
1. A purplish red colouring matter obtained from natural litmus or synthesised by oxidizing orcinol in the presence of ammonia, lime, and potash; used as a broad indicator of pH (red at 4.5, blue at 8.3). (05 Mar 2000)