A series of ancestors or progenitors; lineage, or those who compose the line of natural descent.
Condition as to ancestors; ancestral lineage; hence, birth or honorable descent.
A subdivision of a species in other scientific disciplines.
A taxon at that rank, often indicated with trinomial nomenclature (such as Felis silvestris silvestris in zoology and Pinus nigra subsp. salzmannii in botany).
A rank in the classification of organisms, below species.