Definition of Prophylactic

Babylon English Dictionary
preventative of disease
means of prevention
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Prophylactic Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(n.)
A medicine which preserves or defends against disease; a preventive.
  
(a.)
Alt. of Prophylactical
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
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prophylactic
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prophylactic
\proph`y*lac"tic\ (?), n. [cf. f. prophylactique.] (med.) a medicine which preserves or defends against disease; a preventive. [
prophylactic
\proph`y*lac"tic\ (?), prophylactical \proph`y*lac"tic*al\ (?) ], a. [gr. &?;, fr. &?; to guard against; &?; before + &?; to guard: cf. f. prophylactique.] (med.) defending or preserving from disease; preventive.

GLOSSARY OF ESOTERIC WORDS
1.Something that prevents or slows the course of an illness or disease
2.condom
eg:We should all be clear that there is no trade-off between effective action against terrorism and the protection of human rights. On the contrary, I believe that in the long term we shall find that human rights, along with democracy and social justice, are one of the best prophylactics against terrorism. "While we certainly need vigilance to prevent acts of terrorism, and firmness in condemning and punishing them, it will be self-defeating if we sacrifice other key priorities, such as human rights, in the process
WordNet 2.0

Noun
1. remedy that prevents or slows the course of an illness or disease; "the doctor recommended several preventatives"
(synonym) preventive, preventative
(hypernym) remedy, curative, cure
2. contraceptive device consisting of a thin rubber or latex sheath worn over the penis during intercourse
(synonym) condom, rubber, safety, safe
(hypernym) contraceptive, preventive, preventative, contraceptive device, prophylactic device, birth control device

Adjective
1. capable of preventing conception or impregnation; "contraceptive devices and medications"
(synonym) contraceptive, antifertility
(similar) protective
2. tending to ward off; "the swastika...a very ancient prophylactic symbol occurring among all peoples"- Victor Schultze
(synonym) cautionary, preventive
(similar) protective
3. preventing or contributing to the prevention of disease; "preventive medicine"; "vaccines are prophylactic"; "a prophylactic drug"
(synonym) preventive, preventative
(similar) healthful
Prophylactic Definition from Medicine Dictionaries & Glossaries
Aromatherapy Glossary
Preventative of disease or infection
NCI Dictionary of Cancer Terms
In medicine, something that prevents or protects.
A Service of the National Cancer Institute.
Hepatitis Central (TM) Liver Disease Medical Glossary
Any agent or device that prevents or helps to prevent the development of disease
Glossary of HIV/AIDS Terms
A preventive medicine, device or measure; often referring to condoms or a dental dam.