13-Letter Words Containing: A,C,D,E,E,I,O,S

• Any of many marine worms, of the phylum Hemichordata, that have a primitive notochord

• any of various fungi of the subdivision Basidiomycota

• a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty

• a complex pattern of constantly changing colors and shapes

• an optical toy in a tube; it produces symmetrical patterns as bits of colored glass are reflected by mirrors

• salt of ferrocyanic acid usually obtained by a reaction of a cyanide with iron sulphate