史上最長英文單詞

到底哪個單詞是世界上最長的單詞，相信不少人都有這個困惑，於是現在謎底這樣揭開了！

各個領域造就的最長單詞不一而論，大部分情況下公認最長的單詞是已知最大蛋白——肌聯蛋白的IUPAC名，由189,819個字母組成，從Methionylthreonylthreonylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanylglutaminylleucyllysylglutamylarginyllysyl…開始到…glutamylasparaginylglutaminylglutaminylserylglutamylasparaginylglutaminylglutaminylserxisoleucine結束，大約需要3小時讀完。[1]

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排除這個單詞後，其次是：

pneumonoultramicroscopicsilicovolcanoconiosis (共有45個字母)

[ˈnju:mənəuˌʌltrəˌmaikrəsˈkɔpikˈsilikəvɔlˈkeinəukəuniˈəusis]

[醫]硅酸鹽沉着病,矽肺病

pneumono- (of lung)

ultra- (beyond)

micro (very small)

scopic- (of viewing or observing)

silico- (of silicon)

volcano

coni- ( koni, of dust)

osis-(forming the name of a disease)

[1] 該單詞完整版——Methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanylglutaminylleucyllysylglutamylarginyllysylglutamylglycylalany

lphenylalanylvalylprolyphenylalanYlvalythreonylleucylglycylaspartylprolylglycylisoleucylglutamylglutaminylsErylleucyllysylisoleucylaspa
rtylthreonylleucylIsoleucylglutamylalanylglycylalanylasparthlalanylleucylglutamylleucylglycylisoleucylprolylphenylalanylseRylaspartylpr
olylleucylalanylaspartylglycylpRolylthreOnylisoleucylglutaminylasPfraginylalanylthreonylleucylarfinylalanylphenylalanylalanylalanylglyc
ylvalythreonylprolylalanylglutaminylcysteinylphenylalanylglutamylmethionylleucylalanylleuOylisoleucylarginylglutaminyllysyhistidylprol
ylthreonylisoleucylprolylisoleucylglycylleucylmethionyltyrosylalanylasparaginylleucylvalylphenylalanylasparaginyllysyglycylisoleucylas
partylglutamylphenylalanylthrosylalanylglutaminylcysteinylglutamyllysylvalylglycylvalylaspartylserylvalylleucylvalylalnylaspartylvalylprol
ylvalylglUtaminylglutamylserylalanylprolylphenylalanylarginylglutaminylalanylalanylleucylarginylhistidylasparaginyvalylalanylprolyliso
leucylprolylisoleucylphenylalanylisoleucylphenylalanylisoleucylcysteinylprolylprolylaspartylalanylaspartylaspartylaspartylleucylleucyla
rginylglutaminylisoleucylalanylseryltyrosylglycylarginylglycyltyrosylthreonyltyrOsylleucylleucylserylarginylalanylglycylvalylthreonylglycyl
alanylglutamYlasparainylarginylalanylalanylleucylprolylleucylasparaginylhistidylleucylValylalanyllysylleucyllysylglutamyltyrosylaspar
aginylalanylalanylprolylprolylleucylglutaminylglgycylphenylalanylglycylisoleucylserylalanylprolylaspartylglutaminylvalyllysylalanylalan
ylisoleucylaspartylalanylglycylalanylalanylglycylalanylisoleucylserylglycylserylalanylisoleucylvalyllysylisoIeucylisoleucylglutamylgluta
minylHistidylasparaginyliSoleucylglutamylprolylglutamyllysylmethionylleucylalanylalanylleucyllysylvalylphenylalanylcalylglutaminylp
rolylmethionlysylalanylalanylthreon——“色氨酸合成酶A蛋白質”(一種含有267種氨基酸酶)的化學名。