safety

https://doi.org/10.1351/goldbook.14407
Reciprocal of risk: practical certainty that injury will not result from a hazard under defined conditions.
Notes:
  1. Safety of a drug or other substance in the context of human health: the extent to which a substance may be used in the amount necessary for the intended therapeutic purpose with a minimum risk of adverse health effects.
  2. Safety (toxicological): The high probability that injury will not result from exposure to a substance under defined conditions of quantity and manner of use, ideally controlled to minimize exposure.
Source:
PAC, 2010, 82, 679. (Explanatory dictionary of key terms in toxicology: Part II (IUPAC Recommendations 2010)) on page 731 [Terms] [Paper]