Also pneumo-; especially before a vowel, pneumon-.

Origin of pneumono-

combining form representing Greek pneúmōn lung Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for pneumono-

before vowels pneumon-, word-forming element meaning "lung," from comb. form of Greek pneumon (genitive pneumonos "lung" (see pneumonia).

Online Etymology Dictionary, © 2010 Douglas Harper

pneumono- in Medicine


  1. Lung; pulmonary:pneumonotomy.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.