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Definitions

American Heritage® Dictionary of the English Language, Fourth Edition

  1. n. Total or partial collapse of the lung.
  2. n. A congenital condition characterized by the incomplete expansion of the lungs at birth.

Century Dictionary and Cyclopedia

  1. n. Imperfect dilatation, especially of the air-cells of the lungs of newly born children.

Wiktionary

  1. n. The collapse of a part of or the whole lung caused by inner factors rather than a pneumothorax.

WordNet 3.0

  1. n. collapse of an expanded lung (especially in infants); also failure of pulmonary alveoli to expand at birth

Etymologies

  1. New Latin : Greek atelēs, incomplete (a-, not; see a-1 + telos, end; see telo-) + Greek ektasis, stretching out (from ekteinein, to stretch out : ek-, out; see ecto- + teinein, to stretch; see epitasis).

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‘atelectasis’ has been looked up 1405 times, loved by 1 person, added to 8 lists, and has a Scrabble score of 13.