Aeration

1. n. The act or preparation of charging with carbonic acid gas or with oxygen.
2. n. Exposure to the free action of the air; airing; as, aeration of soil, of spawn, etc.
3. n. A change produced in the blood by exposure to the air in respiration; oxygenation of the blood in respiration; arterialization.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.