MDS           
noun  medical specialized uk/ˌem.diːˈes/ us/ˈemˌdiːˈes/
 [ U ]骨髓增生异常综合症(myelodysplastic syndromes的缩写) 
abbreviation for myelodysplastic syndromes: a group of conditions that cause problems in the blood cells of the bone marrow (= soft tissue in the centre of bones)
  [ C ]牙科硕士(Master of Dental Surgery的缩写) 
abbreviation for  Master of Dental Surgery