A variety of printing ink composed of complex oligomers, monomers, and other compounds that dry or "set" by polymerization upon exposure to various forms of radiation, such as ultraviolet light, beams of electrons, or infrared radiation, rather than traditional drying methods such as evaporation, absorption, precipitation, or oxidation. See Ultraviolet (UV) Curing Ink, Electron Beam (EB) Curing Ink, and Super Quick-Set Infrared Ink.