subspecialty

[suhb-spesh-uh l-tee, suhb-spesh-]

noun, plural sub·spe·cial·ties.

a lesser or minor specialty: a cinematographer with a subspecialty of portrait photography.

Origin of subspecialty

First recorded in 1925–30; sub- + specialty
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019