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n. pl. safe·ties
1. The condition of being safe; freedom from danger, risk, or injury.
2. A device designed to prevent accidents, as a lock on a firearm preventing accidental firing.


Relative freedom from harm, a term which, in clinical trials, refers to an absence of harmful side effects resulting from use of the product under investigation; it may be assessed by laboratory testing of biological samples, special tests and procedures, psychiatric evaluation, and/or physical examination of subjects/patients.


Public health The state of being secure or safe from injury, harm, or loss; a judgment of the acceptability of risk–a measure of the probability of an adverse outcome and its severity associated with using a technology in a given situation–eg, for a Pt with a particular health problem, by a clinician with certain training, or in a specified treatment setting. See Injury, Injury prevention, Negotiated safety, On-line safety.


n the condition of possessing freedom from being exposed to risk, danger, or harm.


avoidance of occupational, iatrogenic or personal injury.

drug safety
freedom from undesirable side-effects; increases with specificity and selectivity of a drug. See also safety index (below).
safety index
maximum tolerated dose/recommended dose, the doses being expressed in similar terms, e.g. mg/lb, mg/kg.
radiological safety routine
the specific routine to be followed in an x-ray room to ensure minimal risk to all parties.
restraint safety
proper use of appropriate restraint procedure when dealing with any animal.
safety specifications
specifications laid down by a local government authority about the construction and equipment to be used in a radiological facility.

Patient discussion about safety

Q. what measures are in place to ensure the safety of vaccines. Hello there, I read the previous question which was asked by Edmund. This question made me to think, what measures are in place to ensure the safety of vaccines.

A. Not only related to Autism, we have to be very cautious when we vaccine for other diseases too. As with all medical products, vaccines undergo extensive testing to document their efficacy and to explore potential harms. Before a potential vaccine is licensed for use, FDA scientists conduct a thorough and independent review of the testing data and often employ the help of an FDA public advisory review committee. In addition, FDA rigorously oversees the manufacturing process for vaccines used in this country - including approval of each step in the process and on site inspection. Following licensure, vaccines continue to be monitored through information shared by parents, doctors, and other public health officials.

Q. Contact lenses I’m 17 years old girl, and I have glasses since third grade. I never had any real problems with wearing them,. my best friend always encourage me to try contact lenses, but it seems so strange to put something on directly on your eyes- is it safe? How difficult is it to do?

A. Consult your ophthalmologist (eye doctor) before you decide.

More discussions about safety
References in periodicals archive ?
Mesaba Airlines spokesperson Liz Costello told that employees were informed of the talks Wednesday but would not say which party initiated the discussions.
In some cases airlines are dealing with 25-year-old planes.
airlines allocate an estimated 8% of their seats for frequent flier freebies, but the carriers won't reveal precisely how the process works.
At many airports, the airlines that grabbed up gates will hold them for a long time; some of the leases last from 20 to 30 years.
United Airlines, American Airlines, Continental Airlines and Northwest Airlines
During the 1990s, Mesa Airlines operated United Express, an airline that fed passengers into Los Angeles International Airport for United Airlines.
major airlines buy their way into Latin America, go-it-alone Delta may find itself without a connecting flight.
The effect is clear, as Wall Street demonstrated with a vengeance last year when stocks of the largest airlines, which posted record profits in 1987 and 1988, soared and became subject to frenzied wheeling and dealing.
Kingfisher Airlines' entire suite of Sabre Airline Solutions products is fully hosted through Sabre eMergo Web access, an application service provider environment that provides the technology without the cost of acquiring and maintaining costly hardware and infrastructure systems.
Northwest Airlines intends to file its plan of reorganization with a US bankruptcy court by early next week, a Northwest spokesman said on Tuesday.
Part of the problem is that the govermnent requires much less stringent safety procedures from the small airlines than from the big ones.