我們從初中或者更早開始就學(xué)習(xí)了英語，那么大家知道英語字母中最長(zhǎng)的單詞是什么么?下面由學(xué)習(xí)啦小編幫大家整理資料。

　　世界上最長(zhǎng)的單詞共189819個(gè)字母，讀完需三個(gè)多小時(shí)

　　肌聯(lián)蛋白這個(gè)詞在中文里只有四個(gè)字啊四個(gè)字，而它的英文學(xué)名有多少個(gè)字母?十八萬九千八百一十九個(gè)!對(duì)，你沒看錯(cuò)，就是189819個(gè)字母!這么坑爹的單詞是怎么誕生的?這就要從IUPAC命名法說起了。

　　這個(gè)世界上有一個(gè)名叫International Union of Pure and Applied Chemistry(國(guó)際純粹與應(yīng)用化學(xué)聯(lián)合會(huì))的組織，它最有名的工作就是定義化學(xué)等領(lǐng)域的專有名詞。它出過一本“藍(lán)寶書”(你沒看錯(cuò)，它的外號(hào)就是The Blue Book)IUPAC Nomenclature of Organic Chemistry，也就是《IUPAC有機(jī)化學(xué)命名法》。

　　理科狗們?cè)诟咧泻痛髮W(xué)階段一定被系統(tǒng)命名法折磨過吧?想想2，2，5-三甲基己烷之類的東東。這就是IUPAC命名法的中文版。如果翻譯成英文，三甲基己烷的單詞長(zhǎng)達(dá)15個(gè)字母trimethylhexane。你以為這就算長(zhǎng)單詞?呵呵，請(qǐng)看“孟二醇”三個(gè)字的英文版：2-hydroxy-α,α,4-trimethylcyclohexanemethanol。這個(gè)單詞有多長(zhǎng)?數(shù)學(xué)不好+密集恐懼癥的小編已經(jīng)數(shù)不過來了。

　　因此，一旦遇上某些鏈啊、基啊特別多的化合物，它的名稱也就長(zhǎng)的喪心病狂。骨骼肌中含有一種名叫肌聯(lián)蛋白的蛋白質(zhì)，它有25000多個(gè)氨基端。這直接導(dǎo)致它的學(xué)名成為最長(zhǎng)的英文單詞，長(zhǎng)度為189819個(gè)字母!

　　這直接導(dǎo)致了IUPAC的藍(lán)寶書從未發(fā)行過紙質(zhì)版本。

　　Methionylthreonylthreonylglutaminylarginyltyrosylglutamylserylleucylphenylalanylalanylglutaminyl

　　leucyllysylglutamylarginyllysylglutamylglycylalanylphenylalanylvalylprolylphenylalanylvalylthreony

　　lleucylglycylaspartylprolylglycylisoleucylglutamylglutaminylserylleucyllysylisoleucylaspartylthreonylleucy

　　lisoleucylglutamylalanylglycylalanylaspartylalanylleucylglutamylleucylglycylisoleucylprolylphenylalanylse

　　rylaspartylprolylleucylalanylaspartylglycylprolylthreonylisoleucylglutaminylasparaginylalanylthreonylle

　　ucylarginylalanylphenylalanylalanylalanylglycylvalylthreonylprolylalanylglutaminylcy

　　steinylphenylalanylglutamylmethionylleucylalanylleucylisoleucylarginylglutaminyllysylhistidylprolylthreon

　　ylisoleucylprolylisoleucylglycylleucylleucylmethionyltyrosylalanylasparaginylleucylvalylphenylalanylasparaginy

　　llysylglycylisoleucylaspartylglutamylphenylalanyltyrosylalanylglutaminylcysteinylglutamyllysylvalylglycylvalylas

　　partylserylvalylleucylvalylalanylaspartylvalylprolylvalylglutaminylglutamylserylalanylprolylphenylalanylarginylglutam

　　inylalanylalanylleucylarginylhistidylasparaginylvalylalanylprolylisoleucylphenylalanylisoleucylcysteinylprolylprolylas

　　partylalanylaspartylaspartylaspartylleucylleucylarginylglutaminylisoleucylalanylseryltyrosylglycylarginylglycyltyrosy

　　lthreonyltyrosylleucylleucylserylarginylalanylglycylvalylthreonylglycylalanylglutamylasparaginylarginylalanylalanylleu

　　cylprolylleucylasparaginylhistidylleucylvalylalanyllysylleucyllysylglutamyltyrosylasparaginylalanylalanylprolylprolyll

　　eucylglutaminylglycylphenylalanylglycylisoleucylserylalanylprolylaspartylglutaminylvalyllysylalanylalanylisoleucylasp

　　artylalanylglycylalanylalanylglycylalanylisoleucylserylglycylserylalanylisoleucylvalyllysylisoleucylisoleucylglutamylglut

　　aminylhistidylasparaginylisoleucylglutamylprolylglutamyllysylmethionylleucylalanylalanylleucyllysylvalylphenylalanyl

　　valylglutaminylprolylmethionyllysylalanylalanylthreonylarginylacetylseryltyrosylserylisoleucylthreonylserylprolylseryl

　　glutaminylphenylalanylvalylphenylalanylleucylserylserylvalyltryptophylalanylaspartylprolylisoleucylglutamylleucylleu

　　cylasparaginylvalylcysteinylthreonylserylserylleucylglycylasparaginylglutaminylphenylalanylglutaminylthreonylglutami

　　nylglutaminylalanylarginylthreonylthreonylglutaminylvalylglutaminylglutaminylphenylalanylserylglutaminylvalyltrypto

　　phyllysylprolylphenylalanylprolylglutaminylserylthreonylvalylarginylphenylalanylprolylglycylaspartylvalyltyros

　　yllysylvalyltyrosylarginyltyrosylasparaginylalanylvalylleucylaspartylprolylleucylisoleucylthreonylalanylleucy

　　lleucylglycylthreonylphenylalanylaspartylthreonylarginylasparaginylarginylisoleucylisoleucylglutamylvalylglutam

　　ylasparaginylglutaminylglutaminylserylprolylthreonylthreonylalanylglutamylthreonylleucylaspartylalanylthreony

　　larginylarginylvalylaspartylaspartylalanylthreonylvalylalanylisoleucylarginylserylalanylasparaginylisoleucylasparag

　　inylleucylvalylasparaginylglutamylleucylvalylarginylglycylthreonylglycylleucyltyrosylasparaginylglutaminyl……