Longevity escape velocity
\lɔnˈʤɛvəti\ \ɪˈskeɪp\ \vəˈlɑsəti\
Longevity escape velocity is a hypothetical situation in which life expectancy is improving at a faster rate than people are ageing.
For example, if we are able to increase the life expectancy of a person at any age by 2 years in any given year, there will be the possibility of living forever. The concept of a possible longevity escape velocity is in direct opposition to the theory of a biological limit on life.