[], (Noun)

Definitions:
- Reduction of the level of carbon dioxide in the blood; = "hypocapnia". Also: absence of carbon dioxide in the blood or in an organism's ambient atmosphere (rare).


Phrases:

Origin:
late 19th century. From Italian acapnia from ancient Greek ἄκαπνος without smoke (from ἀ- + καπνός smoke) + Italian -ia