subspecies , n :
(taxonomy) A rank in the classification of organisms, below species. (taxonomy) A taxon at that rank, often indicated with trinomial nomenclature (such as Felis silvestris silvestris in zoology and Pinus nigra subsp. salzmannii in botany).
Source http://handbookblogger.blogspot.com/2017/10/subspecies-word-of-day-for-october-6.html
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