overspecialize

verb

1. To specialize to an excessive degree.

   “The tendency to overspecialize is also noticeable in the county. Some farmers are growing fruit to the exclusion of all other crops; some carry the practice a step further and grow only peaches.”

   “The greatest of benefits to be derived from a purposeful college education are an active and lasting intellectual curiosity—a pervading spirit of inquiry—and the ability to think. To attain these goals the student should direct his education in a broad field of study rather than overspecialize in a single subject.”

   “Still, Winn is a savvy observer of intellectual politics, ably dissecting the economic and administrative incentives that encourage academics to overspecialize.”