A binominal is a scientific name at the rank of species with two terms, a generic name and a specific name.
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A binomen is a two-part Latin name used in the scientific classification of organisms. It consists of the genus name followed by the species name, forming the species' scientific name. For example, in Homo sapiens, "Homo" is the genus and "sapiens" is the species.
A binomen is a name with two parts, or a scientific name at the rank of species with two terms, a generic name and a specific name.
For a human the taxonomical name is Homo sapiens.
A human's binomen is Homo sapiens, which is the scientific name for the species to which humans belong. "Homo" refers to the genus to which humans belong, and "sapiens" refers to the specific species within that genus.
The two categories used in a binomen are the genus and the species. The genus refers to a group of closely related species, and the species is a specific organism within that group. Together, the genus and species create a unique scientific name for each organism.
Binomial nomenclature (also called binominal nomenclature or binary nomenclature) is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (which may be shortened to just "binomial"), a binomen or a scientific name; more informally it is also called a Latin name. The first part of the name identifies the genus to which the species belongs; the second part identifies the species within the genus. For example, humans belong to the genus Homo and within this genus to the species Homo sapiens.