genus

noun

1. A category in the classification of organisms, ranking below family (Lat. familia) and above species.

   “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.”

   “Müller […] criticized the division of the "Jubuleae" into two families and he cited Jubula as an annectant genus.”

   “Other maloid genera with hard nutlets are Cotoneaster, Hesperomeles, Osteomeles, and Pyracantba, but each of these is quite different from Mespilus and Crataegus.”

2. A category in the classification of organisms, ranking below family (Lat. familia) and above species.

   “In most cases, at subsequent mentions of the binomial name you can abbreviate the genus with no danger of confusing the reader.”

3. A group with common attributes.

   “Recollection is one of a whole genus of effects which are more or less peculiar to the phenomena that we naturally call "mental."”

4. A natural number representing any of several related measures of the complexity of a given manifold or graph.
5. Within a definition, a broader category of the defined concept.
6. A type of tuning or intonation, used within an Ancient Greek tetrachord.