PRISM n. 3 definitions
color. -- Nicol's prism, Nicol prism. Etym: [So called from Wm. Nicol, of Edinburgh, who first proposed it.] (Opt.) An instrument for experiments in polarization, consisting of a rhomb of Iceland spar, which has been bisected obliquely at a certain angle, and the two parts again joined with transparent cement, so that…
PROGRESSIVE a. 2 definitions
or whist, a way of playing at card parties, by which after every game, the losers at the first table go to the last table, and the winners at all the tables, except the first, move up to the next table. -- Progressive muscular atrophy (Med.), a nervous disorder characterized by continuous atrophy of the muscles. --…