subreplacement

Below the level needed to maintain the current population.

Adjective

  1. Below the level needed to maintain the current population.
    • The other is the fact that the population of Japan has begun to shrink, the result of years of subreplacement birth rates. - 2011, James W. White, Mirrors of Memory: Culture, Politics, and Time in Paris and Tokyo,...

Origin

From sub- + replacement.