A subcategory within a particular genre: The academic mystery is a subgenre of the mystery novel. (noun)
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.
Use "subgenre" in a sentence
"For one, the subgenre is as socially reactionary as Leaden, er, Golden Era SF."
"- Any of the titles in the series of novels by the five biggest names in “urban fantasy,” as the subgenre is known: Kim Harrison, Jeaniene Frost, Vicki Pettersson, Christine Feehan and Sherrilyn Kenyon."
"Which ties back into the weird fact that such a culty subgenre is so dominant in comics, while genres and works that would be considered far more mainstream in other media are pushed to the margins in comics."