exhalation

Meanings

1. 1
   noun

   the act of breathing air out of the lungs, or a breath that is breathed out

   A slow exhalation helped her relax her shoulders.

2. 2
   noun

   a vapor, fume, or other substance given off into the air

   A sulfurous exhalation rose from the volcanic vent.

From Latin exhalatio, from exhalare, 'to breathe out,' formed from ex- 'out' + halare 'breathe.' The atmospheric sense treats vapor or fumes as something breathed out by the earth or another source.

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