What is the longest word in existence?

Answer 1

This is a good question, but difficult to answer.

It depends on what we are encompassing. For example, there are chemicals that reach well over 1,000 characters. But some may not consider that a 'true word'. There are amino-acids, proteins, and many conditions that all are very long in character length.

They may be the biggest words in existence but they will not appear inside a dictionary, the opinion of one being the longest word is down to subjective preference. (There is some semantical dispute over wether this word is.. actually a word.)

Titin"Titin is a giant protein that functions as a molecular spring which is responsible for the passive elasticity of muscle. It is composed of 244 individually folded protein domains connected by unstructured peptide sequences." -Titin:Wikipedia

This word contains 189,819 characters.

Methionylthreonylthreonylglutaminylarginl... threonylserylprolylserylglutaminy

Answer 2

ACETYL­SERYL­TYROSYL­SERYL­ISO­LEUCYL­THREONYL­SERYL­PROLYL­SERYL­GLUTAMINYL­PHENYL­ALANYL­VALYL­PHENYL­ALANYL­LEUCYL­SERYL­SERYL­VALYL­TRYPTOPHYL­ALANYL­ASPARTYL­PROLYL­ISOLEUCYL­GLUTAMYL­LEUCYL­LEUCYL­ASPARAGINYL­VALYL­CYSTEINYL­THREONYL­SERYL­SERYL­LEUCYL­GLYCYL­ASPARAGINYL­GLUTAMINYL­PHENYL­ALANYL­GLUTAMINYL­THREONYL­GLUTAMINYL­GLUTAMINYL­ALANYL­ARGINYL­THREONYL­THREONYL­GLUTAMINYL­VALYL­GLUTAMINYL­GLUTAMINYL­PHENYL­ALANYL­SERYL­GLUTAMINYL­VALYL­TRYPTOPHYL­LYSYL­PROLYL­PHENYL­ALANYL­PROLYL­GLUTAMINYL­SERYL­THREONYL­VALYL­ARGINYL­PHENYL­ALANYL­PROLYL­GLYCYL­ASPARTYL­VALYL­TYROSYL­LYSYL­VALYL­TYROSYL­ARGINYL­TYROSYL­ASPARAGINYL­ALANYL­VALYL­LEUCYL­ASPARTYL­PROLYL­LEUCYL­ISOLEUCYL­THREONYL­ALANYL­LEUCYL­LEUCYL­GLYCYL­THREONYL­PHENYL­ALANYL­ASPARTYL­THREONYL­ARGINYL­ASPARAGINYL­ARGINYL­ISOLEUCYL­ISOLEUCYL­GLUTAMYL­VALYL­GLUTAMYL­ASPARAGINYL­GLUTAMINYL­GLUTAMINYL­SERYL­PROLYL­THREONYL­THREONYL­ALANYL­GLUTAMYL­THREONYL­LEUCYL­ASPARTYL­ALANYL­THREONYL­ARGINYL­ARGINYL­VALYL­ASPARTYL­ASPARTYL­ALANYL­THREONYL­VALYL­ALANYL­ISOLEUCYL­ARGINYL­SERYL­ALANYL­ASPARAGINYL­ISOLEUCYL­ASPARAGINYL­LEUCYL­VALYL­ASPARAGINYL­GLUTAMYL­LEUCYL­VALYL­ARGINYL­GLYCYL­THREONYL­GLYCYL­LEUCYL­TYROSYL­ASPARAGINYL­GLUTAMINYL­ASPARAGINYL­THREONYL­PHENYL­ALANYL­GLUTAMYL­SERYL­METHIONYL­SERYL­GLYCYL­LEUCYL­VALYL­TRYPTOPHYL­THREONYL­SERYL­ALANYL­PROLYL­ALANYL­SERINE IS A 1,185 LETTER CHEMICAL TERM.PNEUMONO­ULTRA­MICRO­SCOPIC­SILICO­VOLCANO­CONIOSIS IS A 45 LETTER WORD THAT IS THE LONGEST WORD IN A MAJOR ENGLISH DICTIONARY. DIS­PRO­PORTION­ABLE­NESS AND IN­COM­PREHEN­SIB­ILITIES ARE THE LONGEST ENGLISH WORDS IN COMMON USAGE AS OF 1996.

SOURCE: fun-with-words.com/word_longest

Answer 3

The longest word that is most frequently used would have to be "Supercalifragilisticexpialidocious". The technically longest word is the full chemical name of the protein Titin with 189,819 letters. (http://en.wikipedia.org/wiki/Titin#Linguistic_significance) =========================================== The longest word in Oxford dictionaries is neumonoultramicroscopicsilicovolcanoconiosis (45 letters). It is supposed to be a lung-disease.