Definition of "subspecialize" []

• To have or pursue a subspecialty: subspecialize in cosmetic surgery. (verb-intransitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "#2 - There is too much medical information and it is impossible to be a specialist in every aspect of medicine and in order to remain current even specialists further subspecialize."
• "Instead, they chose to subspecialize in cardiology, GI, or any number of fields with more desirable lifestyles."
• "Other physicians trained in internal medicine subspecialize by training in a fellowship, such as gastroenterology, cardiology, or pulmonology."