▪ I. porphyric, a.1 Geol. rare.
(pɔːˈfɪrɪk)
[f. porphyr- + -ic: in mod.F. porphyrique.]
= porphyritic.
| 1824 J. Hodgson in J. Raine Mem. (1858) II. 43 The bold red seared line of porphyric hills lying east and west. |
▪ II. porphyric, a.2 Chem.
(pɔːˈfɪrɪk)
[f. Gr. πόρϕυρ-ος purple + -ic.]
In porphyric acid (C10H4N2O7), obtained, as a yellow crystalline powder, or in minute crystals, by the action of nitric acid on euxanthone, and producing a blood-red colour with ammonium carbonate.
| 1866 Watts Dict. Chem. IV. 690 Porphyric acid is slightly soluble, with red colour, in pure water; very slightly soluble in cold, more soluble in boiling alcohol. |