A formative of names of compounds containing three radical groups formed from the benzene or phene group, C6H6, by loss of hydrogen atoms; e.g. triˈphenazine, C6H4NṄC6H2NṄC6H4.
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1890 Jrnl. Chem. Soc.58 491 The dye..regarded by the author as triphenodioxazine.
1892 H. F. Morley & M. M. P. MuirWatts' Dict. Chem. (rev. ed.) III. 830Triphenazine Dihydride C18H12N4.