The longest phrase within the English language is “Pneumonoultramicroscopicsilicovolcanoconiosis,” which refers to a lung illness brought on by inhaling very high-quality silica mud, usually present in volcanoes.
The phrase was coined by American doctor and writer Everett M. Smith in 1935. It’s composed of a number of Greek roots: “pneumono” (lung), “extremely” (very), “micro” (small), “silico” (silicon), “volcano” (volcano), and “coniosis” (mud illness). The phrase is 45 letters lengthy and has been listed within the Guinness E book of World Data because the longest phrase within the English language since 1991.
