samariumn. 釤釤Sm學術名詞釤：化學元素、地球科學、電機工程、礦冶工程、金屬材料、核能釤Sm：電力工程釤（Sa）：鑄造學英文釋義a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite