Make a mosaic (9)
(Other definitions for tessellate that I've seen before include "Form a mosaic - sell estate (anag)" , "perfectly fit to fill a space" , "Decorate with mosaics" , "Create mosaic" , "make a patterned floor?" .)
(Other definitions for tessellate that I've seen before include "Form a mosaic - sell estate (anag)" , "perfectly fit to fill a space" , "Decorate with mosaics" , "Create mosaic" , "make a patterned floor?" .)