A rank in the classification of organisms, below kingdom and above class; also called a divisio or a division, especially in describing plants; a taxon at that rank
A large division of possibly related languages, or a major language family which is not subordinate to another.
A rank in the classification of organisms, below species.
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 subdivision of a species in other scientific disciplines.