Found this........
Q. What is the longest word in the dictionary?
A. It depends...
It might be 'supercalifragilisticexpialidocious' (which appears in the Oxford English Dictionary), unless you want to count names of diseases (such as 'pneumonoultramicroscopicsilicovolcanoconiosis', defined by the OED as "a factitious word alleged to mean 'a lung disease caused by the inhalation of very fine silica dust' but occurring chiefly as an instance of a very long word"), places (such as 'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch', a village in Wales; see the Web site, which has an audio pronunciation of the word), chemical compounds (apparently there is one that is 1,913 letters long), and also a few words found only in Joyce's Finnegans Wake.
Other words famous for being sesquipedalian:
antidisestablishmentarianism ("opposition to the disestablishment of the Church of England")
floccinaucinihilipilification
honorificabilitudinitatibus (Which appears in Shakespeare's Love's Labour's Lost, and which has been cited as [dubious] evidence that Francis Bacon wrote Shakespeare's plays)
Or perhaps smiles is the longest word, because there's a mile between the first letter and the last.
Q. What is the longest word in the dictionary?
A. It depends...
It might be 'supercalifragilisticexpialidocious' (which appears in the Oxford English Dictionary), unless you want to count names of diseases (such as 'pneumonoultramicroscopicsilicovolcanoconiosis', defined by the OED as "a factitious word alleged to mean 'a lung disease caused by the inhalation of very fine silica dust' but occurring chiefly as an instance of a very long word"), places (such as 'Llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch', a village in Wales; see the Web site, which has an audio pronunciation of the word), chemical compounds (apparently there is one that is 1,913 letters long), and also a few words found only in Joyce's Finnegans Wake.
Other words famous for being sesquipedalian:
antidisestablishmentarianism ("opposition to the disestablishment of the Church of England")
floccinaucinihilipilification
honorificabilitudinitatibus (Which appears in Shakespeare's Love's Labour's Lost, and which has been cited as [dubious] evidence that Francis Bacon wrote Shakespeare's plays)
Or perhaps smiles is the longest word, because there's a mile between the first letter and the last.