subrange

noun2

1. •
   A subset of a given range or numeric set.

   • We are concerned with the subrange of integers between a and b.
   • The program defines two subrange types.
2. •
   A subdivision of a mountain range.

   • His own reluctant namesake, Mount Beckey, rises some 8,500 feet in a largely uncharted subrange near the Cathedral Spires of southeastern Alaska. — 2008