Expectancy refers to a person's belief or anticipation about something that is likely to happen in the future. It can be described as a hopeful or anticipated outcome or result. Full definition
Much attention has been focused in recent years on the increase in life expectancy of people reaching, or living for a long time in, retirement. (iii.org)
The breed has an average life expectancy of between 12 and 16 years. (en.wikipedia.org)
The dramatic increase in life expectancy in this century in the so - called developed countries has created a new life stage for the majority of people there. (religion-online.org)