- the usual major subdivision of a family or subfamily in the classification of organisms, usually consisting of more than one species.
- a class or group of individuals, or of species of individuals.
- a kind; sort; class.
- any of the taxonomic groups into which a family is divided and which contains one or more species. For example, Vulpes (foxes) is a genus of the dog family (Canidae)
- a class of objects or individuals that can be divided into two or more groups or species
- a class, group, etc, with common characteristics
- a number characterizing a closed surface in topology equal to the number of handles added to a sphere to form the surface. A sphere has genus 0, a torus, genus 1, etc
