Longest words of EnglisTwo 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 They were withdrawn because they have never been used by chemists, and there is no theoretical limit to the length of possible legitimate chemical terms.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.
(1,185) ACETYL-SERYL-TYROSYL-SERYL-ISO-LEUCYL-THREONYL-
SERYL-PROLYL-SERYL-GLUTAMINYL-PHENYL-ALANYL-VALYL-
PHENYL-ALANYL-LEUCYL-SERYL-SERYL-VALYL-TRYPTOPHYL-
ALANYL-ASPARTYL-PROLYL-ISOLEUCYL-GLUTAMYL-LEUCYL-
LEUCYL-ASPARAGINYL-VALYL-CYSTEINYL-THREONYL-
SERYL-SERYL-LEUCYL-GLYCYL-ASPARAGINYL-GLUTAMINYL-
PHENYL-ALANYL-GLUTAMINYL-THREONYL-GLUTAMINYL-
GLUTAMINYL-ALANYL-ARGINYL-THREONYL-THREONYL-
GLUTAMINYL-VALYL-GLUTAMINYL-GLUTAMINYL-PHENYL-
ALANYL-SERYL-GLUTAMINYL-VALYL-TRYPTOPHYL-LYSYL-
PROLYL-PHENYL-ALANYL-PROLYL-GLUTAMINYL-SERYL-
THREONYL-VALYL-ARGINYL-PHENYL-ALANYL-PROLYL-
GLYCYL-ASPARTYL-VALYL-TYROSYL-LYSYL-VALYL-TYROSYL-
ARGINYL-TYROSYL-ASPARAGINYL-ALANYL-VALYL-LEUCYL-
ASPARTYL-PROLYL-LEUCYL-ISOLEUCYL-THREONYL-ALANYL-
LEUCYL-LEUCYL-GLYCYL-THREONYL-PHENYL-ALANYL-
ASPARTYL-THREONYL-ARGINYL-ASPARAGINYL-ARGINYL-
ISOLEUCYL-ISOLEUCYL-GLUTAMYL-VALYL-GLUTAMYL-
ASPARAGINYL-GLUTAMINYL-GLUTAMINYL-SERYL-PROLYL-
THREONYL-THREONYL-ALANYL-GLUTAMYL-THREONYL-
LEUCYL-ASPARTYL-ALANYL-THREONYL-ARGINYL-ARGINYL-
VALYL-ASPARTYL-ASPARTYL-ALANYL-THREONYL-VALYL-
ALANYL-ISOLEUCYL-ARGINYL-SERYL-ALANYL-
ASPARAGINYL-ISOLEUCYL-ASPARAGINYL-LEUCYL-VALYL-
ASPARAGINYL-GLUTAMYL-LEUCYL-VALYL-ARGINYL-GLYCYL-
THREONYL-GLYCYL-LEUCYL-TYROSYL-ASPARAGINYL-
GLUTAMINYL-ASPARAGINYL-THREONYL-PHENYL-ALANYL-
GLUTAMYL-SERYL-METHIONYL-SERYL-GLYCYL-LEUCYL-
VALYL-TRYPTOPHYL-THREONYL-SERYL-ALANYL-PROLYL-
ALANYL-SERINE
Tobacco Mosaic Virus, Dahlemense Strain.
This word has appeared in the American Chemical Society's Chemical Abstracts and is thus considered by some to be the longest real word.
(85) TAUMATA-WHAKA-TANGI-HANGA-KOAUAU-O-TAMATEA-
TURIPUKAKA-PIKI-MAUNGA-HORO-NUKU-POKAI-WHENUA-
KITANA-TAHU
A hill in New Zealand. This Maori name was in general use, but is now generally abbreviated to Taumata. The name means: the summit of the hill, where Tamatea, who is known as the land eater, slid down, climbed up and swallowed mountains, played on his nose flute to his loved one.
(1,185) ACETYL-SERYL-TYROSYL-SERYL-ISO-LEUCYL-THREONYL-
SERYL-PROLYL-SERYL-GLUTAMINYL-PHENYL-ALANYL-VALYL-
PHENYL-ALANYL-LEUCYL-SERYL-SERYL-VALYL-TRYPTOPHYL-
ALANYL-ASPARTYL-PROLYL-ISOLEUCYL-GLUTAMYL-LEUCYL-
LEUCYL-ASPARAGINYL-VALYL-CYSTEINYL-THREONYL-
SERYL-SERYL-LEUCYL-GLYCYL-ASPARAGINYL-GLUTAMINYL-
PHENYL-ALANYL-GLUTAMINYL-THREONYL-GLUTAMINYL-
GLUTAMINYL-ALANYL-ARGINYL-THREONYL-THREONYL-
GLUTAMINYL-VALYL-GLUTAMINYL-GLUTAMINYL-PHENYL-
ALANYL-SERYL-GLUTAMINYL-VALYL-TRYPTOPHYL-LYSYL-
PROLYL-PHENYL-ALANYL-PROLYL-GLUTAMINYL-SERYL-
THREONYL-VALYL-ARGINYL-PHENYL-ALANYL-PROLYL-
GLYCYL-ASPARTYL-VALYL-TYROSYL-LYSYL-VALYL-TYROSYL-
ARGINYL-TYROSYL-ASPARAGINYL-ALANYL-VALYL-LEUCYL-
ASPARTYL-PROLYL-LEUCYL-ISOLEUCYL-THREONYL-ALANYL-
LEUCYL-LEUCYL-GLYCYL-THREONYL-PHENYL-ALANYL-
ASPARTYL-THREONYL-ARGINYL-ASPARAGINYL-ARGINYL-
ISOLEUCYL-ISOLEUCYL-GLUTAMYL-VALYL-GLUTAMYL-
ASPARAGINYL-GLUTAMINYL-GLUTAMINYL-SERYL-PROLYL-
THREONYL-THREONYL-ALANYL-GLUTAMYL-THREONYL-
LEUCYL-ASPARTYL-ALANYL-THREONYL-ARGINYL-ARGINYL-
VALYL-ASPARTYL-ASPARTYL-ALANYL-THREONYL-VALYL-
ALANYL-ISOLEUCYL-ARGINYL-SERYL-ALANYL-
ASPARAGINYL-ISOLEUCYL-ASPARAGINYL-LEUCYL-VALYL-
ASPARAGINYL-GLUTAMYL-LEUCYL-VALYL-ARGINYL-GLYCYL-
THREONYL-GLYCYL-LEUCYL-TYROSYL-ASPARAGINYL-
GLUTAMINYL-ASPARAGINYL-THREONYL-PHENYL-ALANYL-
GLUTAMYL-SERYL-METHIONYL-SERYL-GLYCYL-LEUCYL-
VALYL-TRYPTOPHYL-THREONYL-SERYL-ALANYL-PROLYL-
ALANYL-SERINE
Tobacco Mosaic Virus, Dahlemense Strain.
This word has appeared in the American Chemical Society's Chemical Abstracts and is thus considered by some to be the longest real word.
(85) TAUMATA-WHAKA-TANGI-HANGA-KOAUAU-O-TAMATEA-
TURIPUKAKA-PIKI-MAUNGA-HORO-NUKU-POKAI-WHENUA-
KITANA-TAHU
A hill in New Zealand. This Maori name was in general use, but is now generally abbreviated to Taumata. The name means: the summit of the hill, where Tamatea, who is known as the land eater, slid down, climbed up and swallowed mountains, played on his nose flute to his loved one.
(66) GORSA-FAWDDACH-AIDRAIGODAN-HEDDO-GLEDDOLON-PENRHYN-AREUR-DRAETH-CEREDIGION
A town in Wales. The name means: the Mawddach station and its dragon teeth at the Northern Penrhyn Road on the golden beach of Cardigan bay.
(58) LLAN-FAIR-PWLL-GWYN-GYLL-GOGERY-CHWYRN-
DROBWLL-LLANTY-SILIO-GOGO-GOCH
A town in North Wales. The name roughly translates as: St. Mary's Church in the hollow of the white hazel near to the rapid whirlpool of Llantysilio of the red cave. It is listed in the Guinness Book of World Records.
(45) PNEUMONO-ULTRA-MICRO-SCOPIC-SILICO-
VOLCANO-CONIOSIS
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.
(41) CHAR-GOGAGOG-MAN-CHAR-GOGAGOG-CHAR-
BUNA-GUNGAMOG
Another name for Lake Webster in Massachusetts. Probably the longest name in the United States.
(39) TETRA-METHYL-DIAMINO-BENZHYDRYL-PHOSPHINOUS
A type of acid.
This is the longest chemical term in the Oxford English Dictionary (2nd Ed.). It does not have its own entry but appears under a citation for another word.
(37) FORMALDEHYDE-TETRA-METHYL-AMIDO-FLUORIMUM
Chemical term in the Oxford English Dictionary (2nd Ed.).
(37) HEPATICO-CHOLANGIO-CHOLECYST-ENTERO-STOMIES
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) SUPER-CALI-FRAGI-LISTIC-EXPI-ALI-DOCIOUS
Song title from the Walt Disney movie Mary Poppins. It is in the Oxford English Dictionary.
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