/ kəˈlaɪdəskəʊp; NAmE -skoʊp/ noun
[ C ] a toy consisting of a tube that you look through with loose pieces of coloured glass and mirrors at the end. When the tube is turned, the pieces of glass move and form different patterns
[ sing. ] a situation, pattern, etc. containing a lot of different parts that are always changing
► kal·eido·scop·ic / kəˌlaɪdəˈskɒpɪk; NAmE -ˈskɑːpɪk/ adjective
early 19th cent.: from Greek kalos beautiful + eidos form + -scope (see scope ).