• WordNet 3.6
    • n subspecies (biology) a taxonomic group that is a division of a species; usually arises as a consequence of geographical isolation within a species
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Webster's Revised Unabridged Dictionary
  • Interesting fact: The Sumatran tiger has the most stripes of all the tiger subspecies, the Siberian tiger has the least.
    • n Subspecies A group somewhat lessdistinct than speciesusually are, but based on characters more important than those which characterize ordinary varieties; often, a geographical variety or race.
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Century Dictionary and Cyclopedia
    • n subspecies In zoology and botany, a variety of a species; a climatic or geographical race recognizably different from another, yet not specifically distinguished; a conspecies. The nearest synonym is race. (See race, n., 5 .) Subspecies is a stronger and stricter word than variety, though nearly synonymous with the latter in its biological sense: it means decidedly more than strain, sport, or breed in like senses. The interpretation of subspecies and their actual handling in zoölogical and botanical taxonomy have been much mooted. Such forms are commonly regarded as nascent or incipient species (see species, 5) which have acquired subspecific characters under varying conditions of environment, and whose specific invalidity is determinable by the fact of their intergradation. See intergrade, v. i.
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Chambers's Twentieth Century Dictionary
    • n Subspecies sub-spē′shēz a division of a species, a geographical variety
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In literature:

This plant is the C. torosa of Blanco, which has been considered a synonym of C. histrix, and here raised to the rank of a subspecies.
"The Philippine Agricultural Review" by Various
See Oberholser (1918) for ranges of the following subspecies.
"A Check-List of the Birds of Idaho" by M. Dale Arvey
I follow Brodkorb (1943) and Paynter (1955a) who did not recognize subspecies in this species.
"Summer Birds From the Yucatan Peninsula" by Erwin E. Klaas
Further collecting is needed better to limit and diagnose this subspecies.
"Geographic Variation in the Pocket Gopher, Thomys bottae, in Colorado" by Phillip M. Youngman
Three populations are separable as subspecies; one has no stripes on the body and occurs in the Yucatan Peninsula.
"A Revision of Snakes of the Genus Conophis (Family Colubridae, from Middle America)" by John Wellman
Variations of this kind are spoken of as geographic, racial, or subspecific and the birds exhibiting them are termed subspecies.
"Color Key to North American Birds" by Frank M. Chapman
This specimen is referable to the nominate subspecies, which is resident along the Gulf coast.
"Vertebrates from the Barrier Island of Tamaulipas, México" by Robert K Selander
The different subspecies figured show the essential characteristics of the species, differing primarily in size.
"The Baculum in Microtine Rodents" by Sydney Anderson
Like the rainbow the cutthroat has been divided into several subspecies.
"Game Birds and Game Fishes of the Pacific Coast" by Harry Thom Payne
Young adults of both subspecies in unworn pelage show best the colors that differentiate the two subspecies.
"Speciation and Evolution of the Pygmy Mice, Genus Baiomys" by Robert L. Packard

In news:

Study used DNA evidence to identify a previously unknown extinct trout subspecies.
With support from WCS, the government of Cameroon creates the world's first sanctuary exclusively for the Cross River gorilla, the rarest of the four gorilla subspecies.
George was the last surviving member of the Pinta Island subspecies.
Feds Decline To List Mexican Wolves As Subspecies .
Environmentalists are blasting a federal government decision not to list the Mexican gray wolf as a separate subspecies under the Endangered Species Act.
ALBUQUERQUE, N.M.—Environmentalists are blasting a federal government decision not to list the Mexican gray wolf as a separate subspecies under the Endangered Species Act.
Bid to protect 4 Nevada butterfly subspecies nixed.
Subspecies of African rhino said to be extinct.
Jack claimed that some of his individuals constituted the last remaining subspecies originally found over the Great Plains.
The review was in response to a 2010 petition from WildEarth Guardians requesting that 10 subspecies of Great Basin butterflies in Nevada and California be listed as threatened or endangered.
Genetic samples showed that some tortoises recently DNA tested were hybrids that had a parent like Lonesome George from the subspecies Chelonoidis abingdoni.
However, the facility's permit for the two involved in the mauling lists them as Syrian brown bears, a subspecies of brown bears that are different from grizzlies , said Fish, Wildlife and Parks spokeswoman Andrea Jones.
Eastern wolves, once thought a gray wolf subspecies, qualify as a distinct wolf species, say federal researchers reviewing two decades of genetic analyses.
Lonesome George is believed to be the last of his subspecies, but he hardly had time for loneliness: The tortoise had constant company from journalists, scientists, and potential mates.
The boutique lobby, a new subspecies, has invaded.

In science:

Although randomized matrix approximation and compressive sampling are based on some common intuitions, it is facile to consider either one as a subspecies of the other.
Finding structure with randomness: Probabilistic algorithms for constructing approximate matrix decompositions
The ful ly quantum theory lies somewhere within the theorizing activity of the human race itself, or the subspecies of physicists, regarded as a quantum system.
`Iconoclastic', Categorical Quantum Gravity
We have the condition in both subspecies (a, b) = 1, equivalently ca − db = ±1 for some c and d (themselves with no common factor).
Isonemal Prefabrics with Perpendicular Axes of Symmetry
The use of these rectangles ‘both ways’ is an opportunity for a still finer distinction of subspecies into subsubspecies.
Isonemal Prefabrics with Perpendicular Axes of Symmetry
This quite different spacing has to be regarded as a third subspecies 18s .
Isonemal Prefabrics with Perpendicular Axes of Symmetry