a combining form meaning “lung,” used in the formation of compound words: pneumonoconiosis.
Origin of pneumono-
combining form representing Greek pneúmōn lung
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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
Medicine definitions for pneumono-
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.