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pneumatocele

(nōōmə-tō-sēl′, nōō-mătə-)
n.
  1. A emphysematous or gaseous swelling.
  2. pneumonocele
  3. A thin-walled cavity formed within the lung, characteristic of staphylococcus pneumonia.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.