人じん口こう転てん換かん

noun

demographic transition

Technical term in demography referring to the shift from high birth and death rates to low birth and death rates as a country develops.

• 多おおくの先せん進しん国こくはすでに人じん口こう転てん換かんを経けい験けんしている。

  Many developed countries have already experienced the demographic transition.