n. Prevention of, or protective treatment for disease.
the GNU version of the Collaborative International Dictionary of English
n. The art of preserving from, or of preventing, disease; the observance of the rules necessary for the preservation of health; preservative or preventive treatment.
The Century Dictionary and Cyclopedia
n. In medicine, the guarding against the attack of some disease. Also prophylactic, prophylaxy.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the prevention of disease
Word Usage
"Another beneficial prophylaxis is to take probiotic acididophilus and other lactic fermentation products daily, either in capsules or as yoghurt or in Yakult ™."