世界上最长的英文单词是什么？？

最长的是1913个字母，

是“色氨酸合成酶A蛋白质”

（一种含有267种氨基酸酶）的全称----

一般的字典上是见不着的。

（你可以翻翻医学专用词汇字典^_*）

单词如下：

Methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalany

lglutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylphenyla

lanylvalylprolyphenylalanYlvalythreonylleucylglycylaspartylprolylglyc

ylisoleucylglutamylglutaminylsErylleucyllysylisoleucylaspartylthreony

lleucylIsoleucylglutamylalanylglycylalanylasparthlalanylleucylglutamy

lleucylglycylisoleucylprolylphenylalanylseRylaspartylprolylleucylalan

ylaspartylglycylpRolylthreOnylisoleucylglutaminylasPfraginylalanylthr

eonylleucylarfinylalanylphenylalanylalanylalanylglycylvalythreonylpro

lylalanylglutaminylcysteinylphenylalanylglutamylmethionylleucylalanyl

leuOylisoleucylarginylglutaminyllysyhistidylprolylthreonylisoleucylpr

olylisoleucylglycylleucylmethionyltyrosylalanylasparaginylleucylvalyl

phenylalanylasparaginyllysyglycylisoleucylaspartylglutamylphenylalany

lthrosylalanylglutaminylcysteinylglutamyllysylvalylglycylvalylasparty

lserylvalylleucylvalylalnylaspartylvalylprolylvalylglUtaminylglutamyl

serylalanylprolylphenylalanylarginylglutaminylalanylalanylleucylarginy

lhistidylasparaginyvalylalanylprolylisoleucylprolylisoleucylphenylalan

ylisoleucylphenylalanylisoleucylcysteinylprolylprolylaspartylalanylasp

artylaspartylaspartylleucylleucylarginylglutaminylisoleucylalanylseryl

tyrosylglycylarginylglycyltyrosylthreonyltyrOsylleucylleucylserylargin

ylalanylglycylvalylthreonylglycylalanylglutamYlasparainylarginylalanyl

alanylleucylprolylleucylasparaginylhistidylleucylValylalanyllysylleucy

llysylglutamyltyrosylasparaginylalanylalanylprolylprolylleucylglutaminy

lglgycylphenylalanylglycylisoleucylserylalanylprolylaspartylglutaminylv

alyllysylalanylalanylisoleucylaspartylalanylglycylalanylalanylglycylala

nylisoleucylserylglycylserylalanylisoleucylvalyllysylisoIeucylisoleucyl

glutamylglutaminylHistidylasparaginyliSoleucylglutamylprolylglutamyllys

ylmethionylleucylalanylalanylleucyllysylvalylphenylalanylcalylglutaminy

lprolylmethionlysylalanylalanylthreonylarginylserine

补充： 1913个字母，“色氨酸合成酶A蛋白质”（一种含有267种氨基酸酶）的全称： Methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalany lglutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylphenyla lanylvalylprolyphenylalanYlvalythreonylleucylglycylaspartylprolylglyc ylisoleucylglutamylglutaminylsErylleucyllysylisoleucylaspartylthreony lleucylIsoleucylglutamylalanylglycylalanylasparthlalanylleucylglutamy lleucylglycylisoleucylprolylphenylalanylseRylaspartylprolylleucylalan ylaspartylglycylpRolylthreOnylisoleucylglutaminylasPfraginylalanylthr eonylleucylarfinylalanylphenylalanylalanylalanylglycylvalythreonylpro lylalanylglutaminylcysteinylphenylalanylglutamylmethionylleucylalanyl leuOylisoleucylarginylglutaminyllysyhistidylprolylthreonylisoleucylpr olylisoleucylglycylleucylmethionyltyrosylalanylasparaginylleucylvalyl phenylalanylasparaginyllysyglycylisoleucylaspartylglutamylphenylalany lthrosylalanylglutaminylcysteinylglutamyllysylvalylglycylvalylasparty lserylvalylleucylvalylalnylaspartylvalylprolylvalylglUtaminylglutamyl serylalanylprolylphenylalanylarginylglutaminylalanylalanylleucylarginy lhistidylasparaginyvalylalanylprolylisoleucylprolylisoleucylphenylalan ylisoleucylphenylalanylisoleucylcysteinylprolylprolylaspartylalanylasp artylaspartylaspartylleucylleucylarginylglutaminylisoleucylalanylseryl tyrosylglycylarginylglycyltyrosylthreonyltyrOsylleucylleucylserylargin ylalanylglycylvalylthreonylglycylalanylglutamYlasparainylarginylalanyl alanylleucylprolylleucylasparaginylhistidylleucylValylalanyllysylleucy llysylglutamyltyrosylasparaginylalanylalanylprolylprolylleucylglutaminy lglgycylphenylalanylglycylisoleucylserylalanylprolylaspartylglutaminylv alyllysylalanylalanylisoleucylaspartylalanylglycylalanylalanylglycylala nylisoleucylserylglycylserylalanylisoleucylvalyllysylisoIeucylisoleucyl glutamylglutaminylHistidylasparaginyliSoleucylglutamylprolylglutamyllys ylmethionylleucylalanylalanylleucyllysylvalylphenylalanylcalylglutaminy lprolylmethionlysylalanylalanylthreonylarginylserine追问

这就是最长的英文单词？

本回答被提问者采纳

世界上最长的单词是什么？

1913个字母，“色氨酸合成酶a蛋白质”(一种含有267种氨基酸酶)的化学名： methionylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanyl-

glutaminylleucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanylvalyl-

prolyphenylalanylvalythreonylleucylglycylaspartylprolylglycylisoleucyl-

glutamylglutaminylserylleucyllysylisoleucylaspartylthreonylleucylisoleucyl-

glutamylalanylglycylalanylasparthlalanylleucylglutamylleucylglycylisoleucylprolyl-

phenylalanylserylaspartylprolylleucylalanylaspartylglycylprolylthreonylisoleucyl-

glutaminylaspfraginylalanylthreonylleucylarfinylalanylphenylalanylalanylalanyl-

glycylvalythreonylprolylalanylglutaminylcysteinylphenylalanylglutamylmethionylleu-

cylalanylleuoylisoleucylarginylglutaminyllysyhistidylprolylthreonylisoleucylprolyli-

soleucylglycylleucylmethionyltyrosylalanylasparaginylleucylvalylphenylalany-

lasparaginyllysyglycylisoleucylaspartylglutamylphenylalanylthrosylalanyl-

glutaminylcysteinylglutamyllysylvalylglycylvalylaspartylserylvalylleucylval-

ylalnylaspartylvalylprolylvalylglutaminylglutamylserylalanylprolylphenylalanylarginyl-

glutaminylalanylalanylleucylarginylhistidylasparaginyvalylalanylprolylisoleucyl-

prolylisoleucylphenylalanylisoleucylphenylalanylisoleucylcysteinylprolylproly-

laspartylalanylaspartylaspartylaspartylleucylleucylarginylglutaminylisoleucy-

lalanylseryltyrosylglycylarginylglycyltyrosylthreonyltyrosylleucylleucylsery-

larginylalanylglycylvalylthreonylglycylalanylglutamylasparainylarginylalanylalanylleucyl-

prolylleucylasparaginylhistidylleucylvalylalanyllysylleucyllysylglutamyltyrosylasparaginy-

lalanylalanylprolylprolylleucylglutaminylglgycylphenylalanylglycylisoleucylserylalanylproly-

laspartylglutaminylvalyllysylalanylalanylisoleucylaspartylalanylglycylalanylalanylgly-

cylalanylisoleucylserylglycylserylalanylisoleucylvalyllysylisoieucylisoleucylglutamyl-

glutaminylhistidylasparaginylisoleucylglutamylprolylglutamyllysylmethionylleucylalany-
lalanylleucyllysylvalylphenylalanylcalylglutaminylprolylmethionlysylalanylalanylthreony-larginylserine