| at vol | atomic volume |
|---|---|
| vol | volar; volatile; volume; voluntary, volunteer |
| CR | calculation rate; calculus removed; calorie-restricted; cardiac rehabilitation; cardiac resuscitatio... |
| AU | according to custom [Lat. ad usum]; allergenic unit; ngstrom unit; antitoxin unit; arbitrary unit; A... |
| CCU | cardiac care unit; Cherry-Crandall unit; coronary care unit; critical care unit |