Relating to actuaries or actuarial science; involving the statistical calculation of insurance risks, life expectancy, and financial liabilities.
From 'actuary' (insurance professional) plus '-al' suffix forming adjectives. The term originated in ancient Rome where actuarii were officials who kept records, evolving to mean insurance mathematicians.
Actuarial science uses probability and mortality tables so sophisticated that actuaries can predict with stunning accuracy how many 25-year-olds in Texas will die next year—a mathematical superpower built on morbid statistics.
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