PNEUMONOULTRAMICROSCOPICSILICOVOLCANOCONIOSIS (/ˌNJUːMƏNOƱˌɅLTRƏˌMAꞮKRƏˈSKⱰPꞮKˌSꞮLꞮKOƱVⱰLˌKEꞮNOƱˌKOƱNIˈOƱSꞮS/ (LISTEN)[1][2]) IS A WORD COINED BY THE THEN PRESIDENT OF THE NATIONAL PUZZLERS' LEAGUE, EVERETT M. SMITH, AS A SYNONYM FOR THE DISEASE KNOWN AS SILICOSIS. IT IS THE LONGEST WORD IN THE ENGLISH LANGUAGE PUBLISHED IN A DICTIONARY, OXFORD DICTIONARIES, WHICH DEFINES IT AS "AN ARTIFICIAL LONG WORD SAID TO MEAN A LUNG DISEASE CAUSED BY INHALING VERY FINE ASH AND SAND DUST".[3]