mo·sa·ic 
(mō-zāĭk)
(mō-zāĭk)n.
1.
a. A picture or decorative design made by setting small colored pieces, as of stone or tile, into a surface.
b. The process or art of making such pictures or designs.
2. A composite picture made of overlapping, usually aerial, photographs.
3. Something that resembles a mosaic: a mosaic of testimony from various witnesses.
4. Botany A viral disease of plants, resulting in light and dark areas in the leaves, which often become shriveled and dwarfed.
5. An array of photosensitive elements in a video camera that react to light and are scanned by other components to compose an image.
6. Biology An individual exhibiting mosaicism.
tr.v. mo·sa·icked, mo·sa·ick·ing, mo·sa·ics
1. To make by mosaic: mosaic a design on a rosewood box.
2. To adorn with or as if with mosaic: mosaic a sidewalk.
[Middle English musycke, from Old French mosaique, from Old Italian mosaico, from Medieval Latin mūsāicum, neuter of mūsāicus, of the Muses, from Latin Mūsa, Muse, from Greek Mousa; see men-1 in the Appendix of Indo-European roots.]
mo·sai·cist (mō-zāĭ-sĭst) n.
mosaicdetail of the concert hall Palau de la Música Catalana
Barcelona, Spain