See also: Genus, ĝenus, and -genus



Borrowed from Latin genus(birth, origin, a race, sort, kind) from the root gen- in Latin gignere, Old Latin gegnere(to beget, produce). Doublet of gender and genre.



genus ‎(plural genera)

  1. (taxonomy) a rank in the classification of organisms, below family and above species; a taxon at that rank
    All magnolias belong to the genus Magnolia.
    Other species of the genus Bos are often called cattle or wild cattle.
    There are only two genera and species of seadragons.
    • 1992, Rudolf M. Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, page 6
      Müller [] criticized the division of the "Jubuleae" into two families and he cited Jubula as an annectant genus.
  2. A group with common attributes.
    • 1945, Bertrand Russell, A History of Western Philosophy, p. 655:
      Recollection is one of a whole genus of effects which are more or less peculiar to the phenomena that we naturally call "mental."
  3. (topology) A number measuring some aspect of the complexity of any of various manifolds or graphs
  4. (semantics) Within a definition, a broader category of the defined concept.


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