骨こつ髄ずい異い形けい成せい症しょう候こう群ぐんこつずいいけいせいしょうこうぐんMeanings1nounmyelodysplastic syndrome; MDSmedicine›Medical term for a group of bone marrow disorders. Often abbreviated as MDS in clinical contexts.骨こつ髄ずい異い形けい成せい症しょう候こう群