precaution
(pri-ko'shŏn 
)
[ pre- + caution ]
An action taken in advance to protect against danger, harm, or possible failure.
airborne p.Airborne isolation.
body substance isolation p.sThe stand ard precautions taken by all health care personnel, such as wearing gloves, goggles, and masks, to avoid contact with potentially infectious body substances such as urine, feces, saliva, vomit, and blood.