whats the longest word in the dictionary?
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Due to width limit on Y!A, some of these words are not in their completion and will be noted with an ellipsis (...).  Please visit the sources links for the full spelling.\n\n\n(45 Letters) PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­CONIOSIS (also spelled PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­KONIOSIS) = a lung disease caused by breathing in particles of siliceous volcanic dust.\nThis is the longest word in any English dictionary. However, it was coined by Everett Smith, the President of The National Puzzlers' League, in 1935 purely for the purpose of inventing a new "longest word". The Oxford English Dictionary described the word as factitious. Nevertheless it also appears in the Webster's, Random House, and Chambers dictionaries.\n\n(37 Letters) HEPATICO­CHOLANGIO­CHOLECYST­ENTERO­STOMIES = a surgical creation of a connection between the gall bladder and a hepatic duct and between the intestine and the gall bladder.\nThis is the longest word in Gould's Medical Dictionary.\n\n(34 Letters) SUPER­CALI­FRAGI­LISTIC­EXPI­ALI­DOCIOUS = song title from the Walt Disney movie Mary Poppins.\nIt is in the Oxford English Dictionary.\n\n"But then one day I learned a word\nThat saved me achin' nose,\nThe biggest word you ever 'eard,\nAnd this is 'ow it goes:\nSupercalifragilisticexpialidocious!"\n\n(30 Letters) HIPPOPOTO­MONSTRO­SESQUIPED­AL­IAN = pertaining to a very long word.\nFrom Mrs. Byrne's Dictionary of Unusual, Obscure and Preposterous Words.\n\n(29 Letters) FLOCCI­NAUCINI­HILIPIL­IFICATION = an estimation of something as worthless.\nThis is the longest word in the first edition of the Oxford English Dictionary. Interestingly the most common letter in English, E, does not appear in this word at all, whilst I occurs a total of nine times. The word dates back to 1741. The 1992 Guinness Book of World Records calls flocci­nauci­nihili­pilification the longest real word in the Oxford English Dictionary, and refers to pneumono­ultra­micro­scopic­silico­volcano­koniosis as the longest made-up one.\n\n(28 Letters) ANTI­DIS­ESTABLISH­MENT­ARIAN­ISM = the belief which opposes removing the tie between church and state.\nProbably the most popular of the "longest words" in recent decades.\n\n(27 Letters) HONORI­FICABILI­TUDINI­TATIBUS = honorableness.\nThe word first appeared in English in 1599, and in 1721 was listed by Bailey's Dictionary as the longest word in English. It was used by Shakespeare in Love's Labor's Lost (Costard; Act V, Scene I):\n\n"O, they have lived long on the alms-basket of words.\nI marvel thy master hath not eaten thee for a word;\nfor thou art not so long by the head as\nhonorificabilitudinitatibus: thou art easier\nswallowed than a flap-dragon."\n\nShakespeare does not use any other words over 17 letters in length.\n\n(27 Letters) ELECTRO­ENCEPHALO­GRAPHICALLY\nThe longest unhyphenated word in Merriam-Webster's Collegiate Dictionary (10th Ed.), joint with ethylene­diamine­tetraacetate (see below).\n\n(27 Letters) ANTI­TRANSUB­STAN­TIA­TION­ALIST = one who doubts that consecrated bread and wine actually change into the body and blood of Christ.\n\n(21 Letters) DIS­PRO­PORTION­ABLE­NESS and (21) IN­COM­PREHEN­SIB­ILITIES\nThese are described by the 1992 Guinness Book of World Records as the longest words in common usage.\n\nSome say SMILES is the longest word because there is a MILE between the first and last letters!\n\nChemical Terms\nTwo chemical terms (3,641 and 1,913 letters long) have appeared in the Guinness Book of World Records. They were withdrawn because they have never been used by chemists, and there is no theoretical limit to the length of possible legitimate chemical terms. A DNA molecule could have a name of over 1,000,000,000 letters if it was written out in full.\n\n(1,185 Letters) ACETYL­SERYL­TYROSYL­SERYL­ISO­LEUCYL­THREONYL­SERYL­PROLYL­S
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No. it is not. The well-known song title from the movie Mary Poppins, Supercalifragilisticexpialidocious, with 34 letters, does appear in several dictionaries, but only as a proper noun, and defined in reference to the song title. Hence it may well be dismissed as not a "real" word.\n\n\nThe Guinness Book of Records, in its 1992 and subsequent editions, declared the "longest real word" in the English language to be floccinaucinihilipilification at 29 letters. Defined as the act of estimating as worthless, its usage has been recorded as far back as 1741. In recent times its usage has been recorded in the proceedings of the United States Senate by Senator Jesse Helms, and at the White House by Bill Clinton's press secretary Mike McCurry. It is the longest non-technical word in the first edition of the Oxford English Dictionary.\n\n\nHowever, There are seemingly endless debates over what is the longest word in English, demonstrating that the idea of what constitutes a word is not as straightforward as it seems. Hyphenated or space-delimited compounds and proper nouns are linguistically considered words, but as they can grow with few limits, they are not counted.\n\nAntidisestablishmentarianism (a 19th century movement in England opposed to the separation of church and state) at 28 letters is often popularly accepted as English's longest word, and is probably the best-known "longest word." Other versions such as Antidisestablishmentarianistically and Pseudoantidisestablishmentarianism are demonstrably longer, though, showing that 'popular acceptance' is not a guarantee of accuracy. (See also the "Constructions" section below.) "Antidisestablishmentarianism" is actually used seriously in academic and ecclesiastical writing about the Church of England when the concept arises, and although one may suspect that authors have gone out of their way not to avoid it, it does thus have a serious claim to be the longest real word in current English.\n\nThe word pneumonoultramicroscopicsilicovolcanoconiosis, also spelled pneumonoultramicroscopicsilicovolcanokoniosis, is defined as "a lung disease caused by the inhalation of very fine silica or quartz dust." At 45 letters, it is certainly the longest word ever to appear in a non-technical dictionary of English, the Oxford English Dictionary. However there are strong indications that the word was coined by puzzler Everett Smith in 1935 as a hypothetical long word that could result from the protraction of medical terms. The actual name of the disease is pneumoconiosis, which is 14 letters long.\n\n\n\nA popular joke answer to the 'longest word' question is the word smiles, credited as the longest word because there is a mile between each s. Of course, by this reckoning the word beleaguered, which contains a league, is even longer.\n\nAccording to some, the longest word is the word after the sentence "And now, a word from our sponsors".\n\nAlthough only fourteen letters long, sesquipedalian deserves a mention. It is derived from a nonce word used by the Roman author Horace, in his work "Ars Poetica" (The Art of Poetry). The quote is as follows: "Proicit ampullas et sesquipedalia verba," which means, "He throws aside his paint pots and his words that are a foot and a half long". The Oxford English dictionary lists sesquipedalianism ("the practice of using words one and a half feet long"), and further derivations can be created as described in the "Constructions" section above.
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Hi there,\n\nWe do have genuine (if rather obviously deliberate) examples in our files of antidisestablishmentarianism (28 letters) and floccinaucinihilipilification (29 letters), which are listed in some of our larger dictionaries. Other words (mainly technical ones) recorded in the complete Oxford English Dictionary include: \n\notorhinolaryngological (22 letters), \nimmunoelectrophoretically (25 letters), \npsychophysicotherapeutics (25 letters), \nthyroparathyroidectomized (25 letters), \npneumoencephalographically (26 letters), \nradioimmunoelectrophoresis (26 letters), \npsychoneuroendocrinological (27 letters) \nhepaticocholangiogastrostomy (28 letters), \nspectrophotofluorometrically (28 letters), \npseudopseudohypoparathyroidism (30 letters). \n\nMost of the words which are given as 'the longest word' are merely inventions, and when they occur it is almost always as examples of long words, rather than as genuine examples of use. For example, the medieval Latin word honorificabilitudinitas (honourableness) was listed by some old dictionaries in the English form honorificabilitudinity (22 letters), but it has never really been in use. The longest word currently listed in Oxford dictionaries is rather of this kind: it is the supposed lung-disease pneumono ultra microscopic silico volcanoconiosis (45 letters). \n(no space is there between the letters. I have added a space because here it is being showed as ...)\n\nrule wid style n luv@vinny
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Sorry.. do you mean the longest word?\n"Antidisestablishmentarianism"  is the longest word in the english dictionary, if that's what you're talking about.
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The CORRECT spelling for the longest word currently in the English language is:\n\nPneumonoultramiscroscopic\nsilicovolcanoconiosis\n\n46 letters long.  It is an inflammatory lung disease caused by the inhalation of fine silica dust.
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antidisestablishmentarianism:  The longest word in the dictionary.
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I think it is:  PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­CONIOSIS (also spelled PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­KONIOSIS) = a lung disease caused by breathing in particles of siliceous volcanic dust.\nThis is the longest word in any English dictionary. However, it was coined by Everett Smith, the President of The National Puzzlers' League, in 1935 purely for the purpose of inventing a new "longest word". The Oxford English Dictionary described the word as factitious. Nevertheless it also appears in the Webster's, Random House, and Chambers dictionaries.
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That's not true. The official longest word is over 64,000 characters long. It is theoretical mature protein compound.
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The Guinness Book of Records, in its 1992 and subsequent editions, declared the "longest real word" in the English language to be floccinaucinihilipilification at 29 letters. Defined as the act of estimating (something) as worthless, its usage has been recorded as far back as 1741. In recent times its usage has been recorded in the proceedings of the United States Senate by Senator Jesse Helms, and at the White House by Bill Clinton's press secretary Mike McCurry, albeit sarcastically. It is the longest non-technical word in the first edition of the Oxford English Dictionary. The acceptability of the 33-letter adverbial form floccinaucinihilipilificastically is subject to controversy.
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It isn't in the dictionary because you spelt it wrong. \n\nTry: Antidisestablishmentarianism\n\nFrom the Oxford English Dictionary:\n\nProperly, opposition to the disestablishment of the Church of England (rare): but popularly cited as an example of a long word.  \n\n1900 N. & Q. 25 Aug. 147/1 In the recent biography of Dr. Benson is an entry from the Archbishop's diary to the effect that ‘the Free Kirk of the North of Scotland are strong antidisestablishmentarians’. 1923 in Brewer's Dict. Phr. & Fable (new ed.) s.v. Long words. 1960 Amrita Bazar Patrika 17 June 6/4 But then ‘Antidisestablishmentarianism’ contains three more letters, as pointed out by two readers. 1984 T. AUGARDE Oxf. Guide Word Games xxvi. 216 The longest words that most people know are antidisestablishmentarianism..and supercalifragilisticexpialidocious.
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pneumono­ultra­micro­scopic­silico­volcano­coniosis\n\nhttp://www.fun-with-words.com/word_longest.html
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There is no "Human Dictionary". \n\nHowever, the longest REAL word in the English language, according to The Guinness Book of Records, is "floccinaucinihilipilification" (29 letters) -  "the act of estimating (something) as worthless".\n\nThis doesn't count made-up words such as "pneumonoultramicroscopicsilicovolcanoconiosis", or "Bababadalgharaghtakamminarronnkonnbronntonnerronntuonnthunntrovarrhounawnskawntoohoohoordenenthurnuk," which only appears in James Joyce's novel, Finnegans Wake.\n\nSome very long names of places can be found at http://llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch.com/\n\np.s. Those long words above are abbreviated, not my fault.  Seems that Yahoo! Answers doesn't like long words.  Anyway, see the source below if you want to see the whole word(s).
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PNEUMONOULTRAMICROSCOPICSILICOVOLCANOCONIOSIS (45 letters; a lung disease caused by breathing in certain particles) is the longest word in any English-language dictionary.
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While considering longest word it is customery not to include medical terms and specialised scientific terms like names of chemicals etc.....and exempting all those rubbish my vote goes for "FLOCCINAUCINIHILIPILIFICATION"\n\nbut what about\n\nFLOCCINAUCINIHILIPILIFICATION + al\n\nwhat about\n\nFLOCCINAUCINIHILIPILIFICATION + alize\n\nwhat about\n\nFLOCCINAUCINIHILIPILIFICATION + alization\n\n\nwhat about\n\nFLOCCINAUCINIHILIPILIFICATION + alizational\n\nnow it's a never ending series of adding "-al","-ize",    "-ation".....all are grammartically correct and none of them are specialized scientific terms.....what would people say out there?\n\nnow i would like to add another scientific term which is in general not accounted for\n\nHIPPOPOTOMONSTROSESQUIPPEDALIO + PHOBIA\n\nmeans fear of long words.\n\nAnyone can check it by just copy pasting it in google and hitting the enter button.
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If is one of the few 2 letters words in the dictionary,\nas for the longest word in the regular dictionary is supercalifragilisticexpialidocious \nin the medical dictionary i know there is\n'pneumonoultramicroscopicsilicovolcanoconiosis',
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PNEUMONOULTRAMICROSCOPICSILICOVOLCANOCONIOSIS (45 letters; a lung disease caused by breathing in certain particles) is the longest word in any English-language dictionary. (It is also spelled -koniosis.)
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pneumonoultramicroscopicsilicovolcanokoniosis = a lung disease\n\nTo my knowledge the 2nd longest is antidisestablishmentarianism.