genus

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genus

 [je´nus] (pl. gen´era) (L.)
a taxonomic category (taxon) subordinate to a tribe (or subtribe) and superior to a species (or subgenus).
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ge·nus

, pl.

gen·er·a

(jēnŭs, jen'ĕr-ă), A genus name begins with a capital letter and is printed in italic type: Escherichia, Helicobacter, Staphylococcus. In this form it is never pluralized. When used as a common noun, a genus name begins with a lowercase letter, is not italicized, and may form a plural: chlamydia, staphylococci. A genus name may be abbreviated with or without a period (E. coli, H. pylori, S aureus) only when the meaning is clear from the context.
In natural history classification, the taxonomic level of division between the family, or tribe, and the species; a group of species alike in the broad features of their organization but different in detail, and incapable of fertile mating.
[L. birth, descent]
Farlex Partner Medical Dictionary © Farlex 2012

genus

(jē′nəs)
n. pl. genera (jĕn′ər-ə)
1. Biology A taxonomic category ranking below a family and above a species and designating a group of species that are presumed to be closely related and usually exhibit similar characteristics. In a scientific name, the genus name is capitalized and italicized, for example,Ovis for sheep and related animals.
2. Logic A class of objects divided into subordinate species having certain common attributes.
3. A class, group, or kind with common attributes.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

genus

Taxonomy A taxonomic grouping of one or several species which is subordinate to a family, tribe or subtribe and superior to a species. Cf Family, Species, Trait, Tribe.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

ge·nus

, pl. genera (jē'nŭs, jen'ĕr-ă)
In natural history classification, the taxonomic level of division between the family, or tribe, and the species; a group of species alike in the broad features of their organization but different in detail, and incapable of fertile mating.
[L. birth, descent]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

genus

The taxonomic category above species and below family. The generic name, in the Linnaean classification, is always written with a capital letter, the specific name in lower case. Thus, in Homo sapiens , Homo is the genus and sapiens the specific name.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

genus

a TAXON immediately above that of a SPECIES and containing usually a group of closely related species. The name of a genus (generic name) is written or printed with an initial capital letter and in BINOMIAL NOMENCLATURE precedes the specific name, which invariably has a small initial letter.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005