WordReference Random House Unabridged Dictionary of American English © 2026
pneumono-, 
  1. a combining form meaning "lung,'' used in the formation of compound words:pneumonoconiosis.
Also, pneumo-;
 [esp. before a vowel,] pneumon-. 
  • combining form representing Greek pneúmōn lung

WordReference Random House Unabridged Dictionary of American English © 2026
pneumo-, 
  1. var. of pneumato- or pneumono-: pneumococcus.

Collins Concise English Dictionary © HarperCollins Publishers::
pneumo-, pneumono-, (before a vowel) pneum-, (before a vowel) pneumon- combining form
  1. of or related to a lung or the lungs; respiratory: pneumoconiosis, pneumonitis
Etymology: from Greek pneumōn lung or pneuma breath
'pneumono-' also found in these entries (note: many are not synonyms or translations):
pneumo- - pneumon- - pneumonoconiosis - pneumonoultramicroscopicsilicovolcanoconiosis

Forum discussions with the word(s) "pneumono-" in the title:


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