[mass noun](Medicine)abnormal excess of nitrogen compounds in the urine (医)氮尿 ■(Veterinary Medicine)a condition that can affect horses exercised after a period of stabling, causing painful stiffness in the hindquarters and back, and dark urine containing products of muscle cell destruction (兽医)氮尿(症)。 亦称 tying-up
语源
mid 19th cent.: from obsolete azote 'nitrogen' + -uria