mal·for·ma·tion 
/ˌmælfoɚˈmeɪʃən/ noun
plural mal·for·ma·tions /ˌmælfoɚˈmeɪʃən/ noun medical : a condition in which part of the body does not have the normal or expected shape [noncount] ▪ The condition is marked by malformation of the spine. [count] ▪ She underwent surgery to correct a heart malformation.
