(1) Process of supplying a building or room with fresh air. (2) Process of exchange of air between the ambient atmosphere and the lungs. (3) In physiology, the amount of air inhaled per day. (4) Oxygenation of blood
International Union of Pure and Applied Chemistry IUPAC, Glossary for Chemists of Terms Used in Toxicology, Prepared for publication by J.H. Duffus, NC., USA 1993. http://www.inchem.org/documents/harmproj/harmproj/ harmproj1.pdf & http://old.iupac.org/reports/1993/6509duffus/c.htm l, (IUPAC/ Tox - Amer) {107}