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pneumonoultramicroscopicsilicovolcanoconiosis Line breaks: pneu¦mono|ultra|micro|scopic|silico|vol¦cano|coni|osis
Pronunciation: /ˌnjuːmə(ʊ)nəʊˌʌltrəˌmʌɪkrə(ʊ)ˈskɒpɪkˌsɪlɪkəʊvɒlˌkeɪnəʊˌkəʊnɪˈəʊsɪs/

Entry from British & World English dictionary

Definition of pneumonoultramicroscopicsilicovolcanoconiosis in English:

noun

[mass noun]
An invented long word said to mean a lung disease caused by inhaling very fine ash and sand dust.

Origin

1930s: a word invented (probably by Everett M. Smith, president of the National Puzzlers' League) in imitation of very long medical terms.

Definition of pneumonoultramicroscopicsilicovolcanoconiosis in:

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