Definition of "phosphoric"
adjective
comparative more phosphoric, superlative most phosphoric
(chemistry) Of or pertaining to phosphorus.
Quotations
She drew to the open window, purple with the night-shadows, made dimly distinct by here and there a distant star; the gulf beneath blended in the darkness, till but one atmosphere seemed both above and below, sometimes illumined by flashes of phosphoric light—meteors that might have suited sea or sky, and, broken by two or three ridges of foam, seen in obscurity, like lines of snow.
1831, L[etitia] E[lizabeth] L[andon], Romance and Reality. […], volume III, London: Henry Colburn and Richard Bentley, […], pages 197–198