a name that has been invented for a lung disease caused by breathing in very small pieces of ash or dust

The longest word in English, according to the Oxford English Dictionary, is pneumonoultramicroscopicsilicovolcanoconiosis - a chronic lung disease caused by the inhalation of fine silicate or quartz dust. 根据《牛津英语词典》，英语中最长的单词是pneumonoultramicroscopicsilicovolcanoconiosis，一种因吸入细小的硅酸盐或石英粉尘而引起的慢性肺部疾病。