sub·pop·u·la·tion 
(sŭb′pŏp-yə-lāshən)
(sŭb′pŏp-yə-lāshən)n.
A part or subdivision of a population, especially one originating from some other population: microbial subpopulations.
- hyperextend
- hyperextension
- hyperfiction
- hyperfine structure
- hypergamy
- hyperglycemia
- hyperglycemic
- hypergol
- hypergolic
- hypergolically
- hypergonadism
- hypericin
- hypericum
- hyperinflation
- hyperinflationary
- hyperinsulinemia
- hyperinsulinism
- Hyperion
- hyperirritability
- hyperirritable
- hyperkalemia
- hyperkeratosis
- hyperkeratotic
- hyperkinesia
- hyperkinesis