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trisnitrate
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trisnitrate
† trisˈnitrate Chem. Obs. [f. tris- + nitrate.] Old name for a nitrate supposed to contain three equivalents of basic oxide and one equivalent of nitric anhydride (then called nitric acid). Cf. tris- 2 a.1836 Pharm. R. Coll. Physic. 217 Trisnitrate of Bismuth was formerly employed as a cosmetic unde...
Oxford English Dictionary
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tris-
tris-, prefix (trɪs) repr. Gr. τρίς thrice (which occurs as prefix, τρισ-, in numerous Gr. compounds, chiefly adjs.): used in Eng. in a few technical words of various kinds, and in Chemistry. 1. See trisagion, trisdiapason, trismegist, trisoctahedron, tristetrahedron. 2. Chem. † a. Used in the early...
Oxford English Dictionary
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