the first synthetic plastic material, developed by the American inventor John Wesley Hyatt (Hyatt, John Wesley) in the late 1860s from a homogeneous colloidal dispersion of cellulose nitrate and camphor. A tough material, with great tensile strength, resistance to water, oils, and dilute acids, capable of low-cost production in a variety of colours, it found a great variety of applications in combs, collars, films, toys, and many other mass-produced consumer goods. Although its flammability led to its replacement in many of these uses by newer synthetic polymers, celluloid has continued to be manufactured and widely used in Europe, the United States, Japan, and elsewhere. See also Bakelite.