The longest phrase within the English language is pneumonoultramicroscopicsilicovolcanoconiosis, a lung illness led to through the inhalation of very superb silica mud, most often present in volcanoes.
The phrase used to be first coined through American doctor and writer Everett M. Smith in 1935. He created the phrase from the Greek roots pneumono (lung), extremely (very), microscopic (small), silico (silicon), volcano (volcano), and -osis (situation). The phrase is 45 letters lengthy and is pronounced as noo-moh-no-ul-tra-mih-kroh-skoh-pih-ko-sih-lih-koh-voh-lka-noh-koh-nee-oh-sis.
