subpopulation

noun

1. A subdivision of a population.

   “Holonyms: population < general population”

   “Meronym: subsubpopulation”

   “Thus, leucine is already being seen as a pharmaconutrient of great relevance for the supplementary feeding of malnourished and frail elderly and for specific subpopulations.”

   “Last year, the situation was further complicated with the discovery of what appears to be a 20th isolated subpopulation in Greenland that has adapted to use ice from glaciers to aid hunting.”