crypto
n.— «“Crypto” is usually not life-threatening. But in 1993, an estimated 403,000 residents of the greater Milwaukee, Wis., area became ill when an ineffective filtration process led to the inadequate removal of cryptosporidium in one of two municipal water treatment plants, according to the Centers for Disease Control and Prevention.» —“Pool parasite punched out” by Andrea Reeves Northwest Press (Ohio) Aug. 31, 2005. (source: Double-Tongued Dictionary)