Emily Dickinson Lexicon

MO-SA'IC, a. [s as z; Fr. mosaique; It. mosaico; Sp. mosayco; L. musivum.]

1. Mosaic work is an assemblage of little pieces of glass, marble, precious stones, &c. of various colors, cut square and cemented on a ground of stucco, in such a manner as to imitate the colors and gradations of painting. Encyc.
2. [from Moses.] Pertaining to Moses, the leader of the Israelites; as, the Mosaic law, rites or institutions.