which is the longest word in the dictionary?

Answer 1

The longest word I know is (and I have to break it up or it won't all show here) is
pnuemonomicroscopic
cillicovolcano
koniosis

It's a miner's lung disease, called Black Lung.

Answer 2

...there is no easy answer that we can give when our visitors ask us for the longest word in the English language. Most very long words only occur in one or two dictionaries, and often they are debatably not words at all. For example, ANTI­DIS­ESTABLISH­MENT­ARIAN­ISM has possibly never really been used to mean "the belief which opposes removing the tie between church and state." Certainly 99 in 100 times it is used as an example of a long word. And who says you can't put NON– (for example) on the beginning to make it even longer?

This problem is even more evident in chemical names. Most chemicals are named using a systematic naming system which methodically describes the molecule's structure. Some molecules, such as proteins, are huge, so it is possible to come up with genuine words containing millions of letters. But of course no chemist uses these really long names in practice.

Here we look at some of the longest words in English dictionaries, and discuss whether they should be considered to be real words. Interesting long chemical terms and place names are listed separately afterwards. The red numbers indicate the length (number of letters) of the word that follows.

For a list of the words, see:
http://fun-with-words.com/word_longest.html

Answer 3

Longest Words
(45) PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­CONIOSIS (also spelled PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­KONIOSIS) = a lung disease caused by breathing in particles of siliceous volcanic dust.
This 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.
(37) HEPATICO­CHOLANGIO­CHOLECYST­ENTERO­STOMIES = a surgical creation of a connection between the gall bladder and a hepatic duct and between the intestine and the gall bladder.
This is the longest word in Gould's Medical Dictionary.

(34) SUPER­CALI­FRAGI­LISTIC­EXPI­ALI­DOCIOUS = song title from the Walt Disney movie Mary Poppins.
It is in the Oxford English Dictionary.

Answer 4

The longest word currently listed in Oxford dictionaries is the lung-disease:
pneumonoultramicroscopicsilicovolcanoconiosis
(45 letters).

(Yahoo Answers seems to truncate this word. It won't let me write it in full).

There are other longer words, such as the chemical formula of DNA, but they doesn't appear in the dictionary and chemists never write them out in full.

Answer 5

Is this a tricky question?

Answer 6

antidisestablishmentarianism

Answer 7

supercalifragilisticixspealidoshus