Failure during embryonic development of normal rotation of all or part of an organ or system such as gut tube or kidney. ... (05 Mar 2000) ... 
(mal″ro-ta´shәn) abnormal or pathologic rotation, as of the spinal column. failure of normal rotation of an organ, as of the gut, during embryological development.
Type: Term Pronunciation: mal′rō-tā′shŭn Definitions: 1. Failure during embryonic development of normal rotation of all or part of an organ or system such as midgut or kidney.
malrotation Faulty or abnormal rotation of a part of the body, especially of the intestines during development.