1. What is the longest word?

Answer 1

pneumono­ultra­micro­scopic­silico­volcano­coniosis

Answer 2

ACETYL ­SERYL ­TYRO SYL­SERYL­ISO ­LEUCYL­THRE ONYL­SERYL­P ROLYL­SER YL­GLUT AMINYL­P HENYL­AL ANYL­VALY L­PHENY L­ALANYL­L EUCYL­S ERYL­SER YL­VALYL­TR YPTOP HYL­ALANYL­ASPAR TYL­PROLYL­I SOLEUCYL ­GLUTAMYL­LE UCYL­LEU CYL­ASPA RAGINYL­V ALYL­CYS TEINYL­T HREON YL­SE RYL­SERYL­ LEUCYL­GLYC YL­ASPAR AGINYL­ GLUTAMI NYL­PH ENYL­AL ANYL­ GLUTAM INYL­THR EONYL­G LUT AMI NYL­ GLUTA MINYL­A LANY L­ARG INYL ­THREONY L­THRE ONY L­GLUT AMINYL ­VALYL­G LUTAMINY L­GLUTA MINYL ­PHENYL­ ALANYL­S ERYL­GL UTAMINY L­VALYL­T RYPTO PHYL­L YSYL­PR OLYL­PHE NYL­A LANYL­P ROL YL­GLU TAMIN YL­SERYL ­THREO NYL­VAL YL­ARGI NYL­PHE NYL­ALANY L­PROLYL­G LYCYL­A SPARTY L­VAL YL­TYR OSYL­ LYSYL ­VALY TYRO SYL­ARGINY L­TYR OSYL­ASPAR AGIN YL­ALANY L­VALYL­LE UCYL­ASP ARTYL­PR OLYL­ LEUC YL­ISOLE UCYL­TH REONYL­A LANYL­LE UCYL­LE UCYL­GLYCY L­THREO NYL­PH ENYL­ALA NYL­ASP ARTYL­TH REONYL­ ARGINYL­ ASPARAGIN YL­ARGIN YL­ISO LEUC YL­ISOLEU CYL­GLUT AMYL­VAL YL­GLUTAM YL­ASPA RAGINYL­GL UTAMINYL ­GLUTAMIN YL­SERYL­P ROLYL­THRE ONYL­THRE ONYL­AL ANYL­GL UTAMYL­ THREONYL­L EUCY L­ASPARTY L­ALANYL­T HREONYL ­ARGINYL­A RGINYL­VA LYL­ASPARTY L­ASPARTYL­ ALANYL­TH REONYL­V ALYL­ALANY L­ISOLE UCYL­ARG INYL­S ERYL­AL ANYL­ASP ARAGINYL­ISO LEUCYL ­ASPA RAGIN YL­LEUC YL­VALYL ­ASPARA GINYL­GLUTA MYL­LE UCYL­VALY L­ARGINY L­GLYCYL­T HREO NYL­GLY CYL­LEUCYL­ TYROSY L­ASPA RAGINY L­GLUTAM INYL­ASPA RAGINYL­ THREONY L­PHENYL­ALA NYL­GLUT AMYL­SERYL ­METHIONY L­SERYL­G LYCYL­LE UCYL­VAL YL­TRYP TOPHYL­T HREONY L­SERYL­ ALANYL­PR OLYL­ALA NYL­SERINE-- (remove the spaces) The tobacco mosaic virus

Answer 3

Longest

Answer 4

The longest word in any major English language dictionary is pneumono­ultra­micro­scopic­silico­volcano­coniosis, a 45-letter word supposed to refer to a lung disease...

I used to think it was supercallifragilisticexpialidocious from Mary Poppins.

But the question did not say in which language. Now, at least in Spanish, we know surely which word is NOT the longest:

"What is the longest word in Spanish?
The answer depends on what you mean by the longest word, but regardless of your definition the longest word isn't superextraordinarísimo, the 22-letter word once listed in the famous recordbook and the word most often cited as the longest in the language. (It means 'most superextraordinary.')"

So, what's the longest word in Spanish? Is it "superextraordinarísimamente?"

What's that long word, that place name, of a place in Wales? Let's see if someone beats me to it.

Llanfairpwllgwyngyllgogerychw ...yrndrobwllllantysiliogogogoch is the famous name of a town in Anglesey in the United Kingdom. This place's name is actually 51 letters long, as certain character groups in Welsh are considered as one letter, for instance ll, ng and ch. It is generally agreed, however, that this invented name, adopted in the mid-19th century, was contrived solely to be the longest name of any town in Britain.

Answer 5

The longest word in any major English language dictionary is pneumono­ultra­micro­scopic­silico­volcano­coniosis, a 45-letter word supposed to refer to a lung disease, but research has discovered that this word was originally intended as a hoax. It has since been used in a close approximation of its originally intended meaning, lending at least some degree of validity to its claim.[1]

The Oxford English Dictionary contains pseudopseudohypoparathyroidism (30 letters).

Answer 6

the longest word in any major English language dictionary is pneumono­ultra­micro­scopic­silico­volcano­coniosis, a 45-letter word supposed to refer to a lung disease, but research has discovered that this word was originally intended as a hoax. It has since been used in a close approximation of its originally intended meaning, lending at least some degree of validity to its claim
The Oxford English Dictionary contains pseudopseudohypoparathyroidism (30 letters).
The longest non-technical word is flocci­nauci­nihili­pili­fication at 29 letters. Consisting of a series of Latin words meaning "nothing" and defined as "the act of estimating something as worthless," its usage has been recorded as far back as 1741.

Answer 7

The longest word in any major English language dictionary is pneumono­ultra­micro­scopic­silico­volcano­coniosis, a 45-letter word supposed to refer to a lung disease.

Answer 8

"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."

Answer 9

The longest word is I

Answer 10

The longest word in any major English language dictionary is;

Pneumonoultramicroscopicsilicovolcanoconiosis

Answer 11

the longest word is "smiles" because there a mile between the two s's.