Definition of pneumonoultramicroscopicsilicovolcanoconiosis in English:

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pneumonoultramicroscopicsilicovolcanoconiosis

Pronunciation: /ˌnjuːmə(ʊ)nəʊˌʌltrəˌmʌɪkrə(ʊ)ˈskɒpɪkˌsɪlɪkəʊvɒlˌkeɪnəʊˌkəʊnɪˈəʊsɪs/

noun

[mass noun]
An invented long word said to mean a lung disease caused by inhaling very fine ash and sand dust.
Example sentences
  • Pneumono­ultra­microscopic­silica­volcano­coniosis is a form of the illness pneumo­coni­osis, caused by the inhalation of a fine silica dust found in most volcanoes.
  • Thus, pneumonoultramicroscopicsilicovolcanoconiosis is a disease of the lungs resulting from the inhalation of very fine silicate or quartz dust

Origin

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

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