世界上最长的英文单词是什么？

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目前最长正式英语单词是:pneumonoultramicroscopicsilicovolcaNOConiosis，[医]肺尘病,矽肺病（共有45个英文字母）。

词根：

pneumono- (of lung?肺的)

ultra- (beyond 越过)

micro (very small 极小的)

scopic- (of viewing or observing 观察或注意的)

silico- (of silicon?硅的)

volcano- (mountain that releases fire and ash?火山的)

coni- ( koni, of dust?尘土的)

osis-(forming the name of a disease 表示疾病)

牛津英语词典收录的长英文单词：

《牛津英语大辞典》（Oxford English Dictionary）作为一部历史性词汇的词典还收录了很多长度在20多个字母左右的单词，其中大多数都是非常技术性的词汇。

这些单词包括：

Otorhinolaryngological——22个字母

Immunoelectrophoretically——25个字母

psychophysicotherapeutics——25个字母

thyroparathyroidectomized——25个字母

pneumoencephalographically——26个字母

radioimmunoelectrophorESIs——26个字母

psychoneuroendocrinological——27个字母

hepaticocholangiogastrostomy——28个字母

spectrophotofluorometrically——28个字母

pseudopseudohypoparathyroidism——30个字母

翻译如下：

世界上最长的单词翻译为中文为：肌联蛋白

但是实在太长了。。具体如下，几乎没人能背的下来。：

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