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Pronunciation: eks-ha-la'shun


  1. Breathing out.
  2. The giving forth of gas or vapor.
  3. Any exhaled or emitted gas or vapor.

Synonym(s): expiration1

[L. ex-halo, pp. -halatus, to breathe out]

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.