• synonyms


  1. variant of pneumato- or pneumono-: pneumococcus.
Show More
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for pneumo-


pneumono-, before a vowel pneum- or before a vowel pneumon-

combining form
  1. of or related to a lung or the lungs; respiratorypneumoconiosis; pneumonitis
Show More

Word Origin

from Greek pneumōn lung or pneuma breath
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for pneumo-

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

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

pneumo- in Medicine


  1. Air; gas:pneumothorax.
  2. Pulmonary:pneumoconiosis.
  3. Respiration:pneumograph.
  4. Pneumonia:pneumococcus.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.