| (A-a)DN2 | alveolo-arterial nitrogen tension difference |
|---|---|
| AbN | antibody nitrogen |
| ASN | abstract syntax notation; alkali-soluble nitrogen; American Society of Nephrology; American Society ... |
| Az | nitrogen [Fr. azote] |
| CHN | carbon, hydrogen, and nitrogen; child neurology; Chinese [hamster]; community health network; commun... |