• The official of an insurance company who handles the mathematical work; a technical expert specially trained in the mathematics, theory, and practice of life and other kinds of insurance. His duties include calculations which involve rates of interest, rates of mortality, loading expenses, loss ratios, premium rates, reserves, dividends to policyholders, etc.

    Internal Revenue Service 1

1Internal Revenue Service, Internal Revenue Manual 4.42.6 Glossary, http://­­irm/­part4/­irm_04-042-006.html (last accessed Dec. 22, 2009).