Definition of "economist"

economist

/iːˈkɒn.ə.mɪst/

noun
plural economists
1. An expert in economics, especially one who studies economic data and extracts higher-level information or proposes theories.
  Quotations
  Economics is a messy discipline: too fluid to be a science, too rigorous to be an art. Perhaps it is fitting that economists’ most-used metric, gross domestic product (GDP), is a tangle too. GDP measures the total value of output in an economic territory. Its apparent simplicity explains why it is scrutinised down to tenths of a percentage point every month.
  2013 August 3, “Boundary problems”, in The Economist, volume 408, number 8847
2. One concerned with political economy.
3. (obsolete) One who manages a household.
4. (obsolete) One who economizes, or manages domestic or other concerns with frugality; one who expends money, time, or labor, judiciously, and without waste.