subspecialize

present singular third person subspecializes · participle present subspecializing · participle past subspecialized · past subspecialized · alternative subspecialise

1. To specialize within a particular area of a specialty.

   1 more example

   Although most collectors subspecialize by genre, whether jazz or classical or country, it’s early American rural blues — loose acoustic laments, recorded before 1935 and performed by artists who were born in or near the Mississippi Delta — that inspires the highest prices and the most fevered pursuits.

   2009 July 12, Amanda Petrusich, “They’ve Got Those Old, Hard-to-Find Blues”, in New York Times