(a) Optics a crystal in which the index of refraction is greater for the ordinary than the extraordinary ray; (b) Geology a cavity having the…

†(a) a variety of Portland cement that can be easily moulded or shaped (obsolete); (b) a soft substance in which the molecules occupy the points of a…

a turbid liquid that exhibits double refraction (indicative of internal anisotropy and hence some degree of ordering in its structure, as in an…

Physics. A cholesteric liquid crystal. Usually in plural.

Physical Chemistry. A mesophase; a liquid crystal. rare.