A small-caliber unused colon, seen in the neonate on radiographic contrast enema; usually a consequence of intestinal atresia or meconium ileus. ... (05 Mar 2000) ... 
(mi″kro-ko´lәn) abnormal smallness of the colon.
Type: Term Pronunciation: mī′krō-kō′lon Definitions: 1. A small-caliber unused colon, seen in the neonate on radiographic contrast enema; usually a consequence of intestinal atresia or meconium ileus.