A taxonomic subdivision of a species consisting of an interbreeding, usually geographically isolated population of organisms. (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 "subspecies" in a sentence
"Anyway, the point is that if you're not a certain subspecies of nerd, you probably are going to find the Silmarillion boring."
"So the biggest of all reindeer subspecies is non-migratory, and so is the smallest, the platyrhynchus subspecies of Spitzbergen."
"'These mongooses may represent a separate subspecies from the one that exists in Kenya,' said Dr. De Luca of WCS 'Tanzania Program."