to construct, pave, or decorate (something) with mosaic
to cover (a surface) with shapes that tessellate
said of geometric shapes: to fit together exactly leaving no spaces
tessellated adj
tessellation /-ʹlaysh(ə)n/ noun
[late Latin tessellatus, past part. of tessellare to pave with tesserae, from Latin tessella, dimin. of tessera: see tessera]