potassium iodide
noun [ U ] chemistry specialized uk/pəˌtæs.i.əm ˈaɪ.əʊ.daɪd/ us/pəˌtæs.i.əm ˈaɪ.ə.daɪd/
碘化钾（和盐类似的一种白色化合物，晶体状，可供医疗用途和照相用途）
a white chemical compound, similar to salt, that forms in crystals and has medical and photographic uses