S: (n) self-preservation (preservation of yourself from harm; a natural or instinctive tendency)
S: (n) reservation (the act of keeping back or setting aside for some future occasion)
S: (n) immobilization, immobilisation (fixation (as by a plaster cast) of a body part in order to promote proper healing) "immobilization of the injured knee was necessary"
S: (n) defense, defence (the act of defending someone or something against attack or injury) "a good boxer needs a good defense"; "defense against hurricanes is an urgent problem"
S: (n) defense, defence (protection from harm) "sanitation is the best defense against disease"
S: (n) inoculating, vaccinating (the act of protecting against disease by introducing a vaccine into the body to induce immunity) "doctors examined the recruits but nurses did the inoculating"
S: (n) ring vaccination (administering vaccine only to people in close contact with an isolated infected patient; prevents the spread of a highly infectious disease by surrounding the patient with a ring of immunization)
S: (n) variolation, variolization (the obsolete process of inoculating a susceptible person with material taken from a vesicle of a person who has smallpox)
S: (n) patrol (the activity of going around or through an area at regular intervals for security purposes)
S: (n) martial art (any of several Oriental arts of weaponless self-defense; usually practiced as a sport) "he had a black belt in the martial arts"
S: (n) aikido (a Japanese martial art employing principles similar to judo)
S: (n) judo (a sport adapted from jujitsu (using principles of not resisting) and similar to wrestling; developed in Japan)
S: (n) jujutsu, jujitsu, jiujitsu (a method of self-defense without weapons that was developed in China and Japan; holds and blows are supplemented by clever use of the attacker's own weight and strength)
S: (n) ninjutsu, ninjitsu (the traditional Japanese method of espionage; involves stealthy movements and the use of camouflage)
S: (n) karate (a traditional Japanese system of unarmed combat; sharp blows and kicks are given to pressure-sensitive points on the body of the opponent)
S: (n) insulation (the act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity)
S: (n) lining (the act of attaching an inside lining (to a garment or curtain etc.))