1. Abbreviation for intravenous pyelogram or intravenous pyelography (in-tra-VEE-nus PYE-el-o-gram or pye-LAH-gra-fee). A series of x-rays of the kidneys, ureters, and bladder. The X-rays are taken after a dye is injected into a blood vessel. The dye is concentrated in the urine, which outlines the kidneys, ureters, and bladder on the X-rays. 2. Abbreviation for IV push. 3. Abbreviation for IV piggy back.