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Pneumonoultramicroscopicsilicovolcanoconiosis, referring to a lung disease caused by silica dust, is the longest word in official English language dictionaries with 45 letters.
The designation of this word as the longest is controversial, because it was likely coined just to be the longest word.

Longest word in English - Wikipedia

en.wikipedia.org/wiki/Longest_word_in_English

The longest word in any of the major English language dictionaries is pneumonoultramicroscopicsilicovolcanoconiosis, ...

14 of the Longest Words in English | Grammarly Blog

www.grammarly.com/blog/14-of-the-longest-words-in-english/

Aug 30, 2016 ... Hippopotomonstrosesquipedaliophobia is the longest word ending in ... Though its a Latin word, it was used by Shakespeare in Love's ...

What is the longest English word? | Oxford Dictionaries

en.oxforddictionaries.com/explore/what-is-the-longest-english-word

The longest words in Oxford Dictionaries are: antidisestablishmentarianism - opposition to the disestablishment of the Church of England - 28 letters ...

Pneumonoultramicroscopicsilicovolcanoconiosis - Dictionary.com

www.dictionary.com/browse/pneumonoultramicroscopicsilicovolcanoconiosis

an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language. Origin of ...

'Longest' word has 189,819 letters, takes three hours to pronounce

www.digitalspy.com/fun/news/a444700/longest-word-has-189819-letters-takes-three-hours-to-pronounce/

Dec 12, 2012 ... 'Longest' word has 189,819 letters, takes three hours to pronounce ... in making them. The longest word in the Oxford English Dictionary is ...

www.ask.com/youtube?q=What Is the Longest Word in the Dictionary?&v=545317QVi_E
Dec 10, 2014 ... Our video explores the longest words in Oxford English Dictionary and OxfordDictionaries.com, as well as the longest place name in Britain.
www.ask.com/youtube?q=What Is the Longest Word in the Dictionary?&v=NFR-ADakI-c
Nov 15, 2012 ... The Longest Word in the World (Chemical name of titin) - 189819 letters: ... Duration: 1:50. Oxford Dictionaries 143,750 views. 1:50. 100 MORE ...

Longest Word in the Dictionary (Video) | Merriam-Webster

www.merriam-webster.com/video/longest-word-in-the-dictionary

Longest Word in the Dictionary. It's probably not what you think it is, and here's the short, sweet reason why. play video-the-longeset-word-in-the-dictionary.

The 7 Longest Words In The English Language | So Bad So Good

sobadsogood.com/2012/06/04/the-7-longest-words-in-the-english-language/

Jun 4, 2012 ... You will find it though in many modern day dictionaries. But would ... The 171 letters make it one of the longest words to appear in literature and ...