calicectasis cal·i·cec·ta·sis (kāl'ĭ-sěk'tə-sĭs, kā'lĭ-) or cal·i·ec·ta·sis (kāl'ē-ěk'tə-sĭs, kā'lē-) n. Dilation of the calices, usually due to obstruction or infection. Also called pyelocaliectasis.
