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Longman Dictionary of Contemporary English
locus
noun
COLLOCATIONS FROM CORPUS
■ ADJECTIVE
major
▪ If the recessive major locus model is accepted the gene frequency would be 59×10 -4.
▪ The overall probability for a patient with Crohn's disease being homozygous for the major locus for Crohn's disease was 0.07.
EXAMPLES FROM CORPUS
▪ A new kind of mothering exists between these two extremes, at the locus of self.
▪ Electronic networks are replacing office buildings as the locus of business transactions.
▪ External locus of control was measured on four items, no more than one of which was allowed to be missing.
▪ For patients psychosocial factors, life events, the locus of control, and patient knowledge have all been explored.
▪ If the recessive major locus model is accepted the gene frequency would be 59×10 -4.
▪ It maps a locus of equilibrium welfare maximum points for the consumer as income increases.
▪ Yet, the individual is at best a locus in which many lines of development come together in a unique set.
The Collaborative International Dictionary
Locus

Locus \Lo"cus\, n.; pl. Loci, & Loca. [L., place. Cf. Allow, Couch, Lieu, Local.]

  1. A place; a locality.

  2. (Math.) The line traced by a point which varies its position according to some determinate law; the surface described by a point or line that moves according to a given law.

    Plane locus, a locus that is a straight line, or a circle.

    Solid locus, a locus that is one of the conic sections.

Douglas Harper's Etymology Dictionary
locus

(plural loci), 1715, "locality," from Latin locus "a place, spot, position," from Old Latin stlocus, literally "where something is placed," from PIE root *st(h)el- "to cause to stand, to place." Used by Latin writers for Greek topos. Mathematical sense by 1750.

Wiktionary
locus

n. 1 A place or locality, especially a centre of activity or the scene of a crime. 2 (context mathematics English) The set of all points whose coordinates satisfy a given equation or condition. 3 (context genetics English) A fixed position on a chromosome that may be occupied by one or more genes.

WordNet
locus
  1. n. the scene of any event or action (especially the place of a meeting) [syn: venue, locale]

  2. the specific site of a particular gene on its chromosome

  3. the set of all points or lines that satisfy or are determined by specific conditions; "the locus of points equidistant from a given point is a circle"

  4. [also: loci (pl)]

Wikipedia
Locus (mathematics)

In geometry, a locus (plural: loci) (Latin word for "place", "location") is a set of points (commonly, a line, a line segment, a curve or a surface), whose location satisfies or is determined by one or more specified conditions.

Locus (magazine)

Locus, subtitled The Magazine of The Science Fiction & Fantasy Field, is published monthly in Oakland, California. It is considered the news organ and trade journal for the English language science fiction and fantasy field, and publishes comprehensive listings of all new books published in the genre. The magazine also presents the annual Locus Awards. Locus Online was launched in April 1997, as a semi-autonomous web version of Locus Magazine.

Locus (genetics)

A locus (plural loci), in genetics, is the specific location or position of a gene's DNA sequence, on a chromosome. Each chromosome carries many genes; humans' estimated ' haploid' protein coding genes are 20,000-25,000, on the 23 different chromosomes. A variant of the similar DNA sequence located at a given locus is called an allele. The ordered list of loci known for a particular genome is called a gene map. Gene mapping is the process of determining the locus for a particular biological trait.

Diploid and polyploid cells whose chromosomes have the same allele of a given gene at some locus are called homozygous with respect to that gene, while those that have different alleles of a given gene at a locus, are called heterozygous with respect to that gene.

Locus (comics)

Locus is the name of two fictional characters appearing in American comic books published by Marvel Comics. The first one, whose real name is Aaron Verne, first appeared in Thor #302 (December 1980), and has the ability to create geometric energy constructs.

The second one is a mutant villainess. She was first introduced as a member of the Mutant Liberation Front in the comic title X-Force under the leadership of Reignfire. She has been portrayed inconsistently with a variety of ethnic features, prior to her death.

LOCUS (operating system)

LOCUS was a distributed operating system developed at UCLA during the 1980s. It was notable for providing an early implementation of the single-system image idea, where a cluster of machines appeared to be one larger machine.

A desire to commercialize the technologies developed for LOCUS inspired the creation of the Locus Computing Corporation which went on to include ideas from LOCUS in various products, including OSF/1 AD and, finally, the SCO– Tandem UnixWare NonStop Clusters product.

Locus

The word locus (plural loci) is Latin for "place". It may refer to:

Usage examples of "locus".

Hac habita contione et ad extremam orationem confirmatis militibus, ne ob hanc causam animo permoverentur neu quod iniquitas loci attulisset id virtuti hostium tribuerent, eadem de profectione cogitans quae ante senserat legiones ex castris eduxit aciemque idoneo loco constituit.

The locus for this singularity will be shown to be unstable in the sense of Poincare and to be subject to aperiodic shifts in its locus due to endogenous factors.

Ibi cum Lucterius apud suos cives quondam integris rebus multum potuisset, semperque auctor novorum consiliorum magnam apud barbaros auctoritatem haberet, oppidum Vxellodunum, quod in clientela fuerat eius, egregie natura loci munitum, occupat suis et Drappetis copiis oppidanosque sibi coniungit.

A small smile played about her lovely mouth as she meditated on the paradox that at one and the same time she could crave the fluidity of her Virtu home locus, a place where she could sprout angel wings from her shoulders and fly, or dive beneath the sea, as finny-tailed as the best mermaid, and yet find herself seeking cold or heat or hunger or any physical sensation strong enough to chase away the terrible fear that she was still dead.

Sed eos fugientes longius Caesar prosequi vetuit, et quod loci naturam ignorabat, et quod magna parte diei consumpta munitioni castrorum tempus relinqui volebat.

At illi intermisso spatio imprudentibus nostris atque occupatis in munitione castrorum subito se ex statione pro castris collocati, acriter pugnaverunt, duabusque missis subsidio cohortibus a Caesare atque eis primis legionum duarum, cum hae perexiguo intermisso loci spatio inter se constitissent, novo genere pugnae perterritis nostris per medios audacissime perruperunt seque inde incolumes receperunt.

Caesar, cum animadverteret hostem complures dies castris palude et loci natura munitis se tenere neque oppugnari castra eorum sine dimicatione perniciosa nec locum munitionibus claudi nisi a maiore exercitu posse, litteras ad Trebonium mittit, ut quam celerrime posset legionem XIII, quae cum T.

Barbari confisi loci natura, cum dimicare non recusarent, si forte Romani subire collem conarentur, paulatim copias distributas dimittere non possent, ne dispersi perturbarentur, in acie permanserunt.

Hoc avertere loci natura prohibebat: in infimis enim sic radicibus montis ferebatur, ut nullam in partem depressis fossis derivari posset.

Praeterea oppida incendi oportere, quae non munitione et loci natura ab omni sint periculo tuta, neu suis sint ad detractandam militiam receptacula neu Romanis proposita ad copiam commeatus praedamque tollendam.

Procumbunt omnibus Gallis ad pedes Bituriges, ne pulcherrimam prope totius Galliae urbem, quae praesidio et ornamento sit civitati, suis manibus succendere cogerentur: facile se loci natura defensuros dicunt, quod prope ex omnibus partibus flumine et palude circumdata unum habeat et perangustum aditum.

Romanos accessisset, persuasum loci opportunitate, qui se ipsum munitione defenderet: equitum vero operam neque in loco palustri desiderari debuisse et illic fuisse utilem, quo sint profecti.

Exposuit quid iniquitas loci posset, quid ipse ad Avaricum sensisset, cum sine duce et sine equitatu deprehensis hostibus exploratam victoriam dimisisset, ne parvum modo detrimentum in contentione propter iniquitatem loci accideret.

Caesar, cum animadverteret hostem complures dies castris palude et loci natura munitis se tenere neque oppugnari castra eorum sine dimicatione perniciosa nec locum munitionibus claudi nisi a maiore exercitu posse, litteras ad Trebonium mittit, ut quam celerrime posset legionem XIlI, quae cum T.

Point loci tend to be unstable over any extended period of time, so the window of opportunity for an invasion is limited.