AskDefine | Define locus

Dictionary Definition



1 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" [also: loci (pl)]

User Contributed Dictionary



From locus.


  • (UK) /ˈləʊkəs/, /"l@Uk@s/
  • (US) /ˈloʊkəs/, /"loUk@s/
    Rhymes: -əʊkəs


  1. A place or locality, especially a centre of activity or the scene of a crime.
    The cafeteria was the locus of activity.
  2. The set of all points whose coordinates satisfy a given equation or condition.
    A circle is the locus of points from which the distance to the center is a given value, the radius.
  3. (genetics) A fixed position on a chromosome that may be occupied by one or more genes.

Related terms


place or locality
set of all points given by an equation or condition
  • Greek: τόπος
  • Japanese: (, kiseki)
position on a chromosome



locus (plural loci)

Extensive Definition

The word locus (plural loci) is Latin for "place":
  • Locus (psychology), in industrial psychology, having an internal or external locus of control
  • Locus (genetics), the position of a gene (or other significant sequence) on a chromosome
  • Locus (mathematics), the set of points satisfying a particular condition, often forming a curve of some sort
  • Locus (medicine), the "place" on the body where a pathogen enters
  • Locus (phonetics), the hypothetical starting point of the formant transitions that characterise plosive consonants acoustically
  • In the classics, literature or theology, locus (or locus classicus) marks the first appearance of a phrase or the definitive passage that is authoritative for an idea
  • Locus (law), in Scots Law, the place which is the location of a crime or incident subject of lawful or legal enquiry
  • Loci is a nickname for rapper Ja Rule
  • Loci (band), an alt-rock band from Bristol, United Kingdom
Locus may also refer to:
locus in Bulgarian: Локус
locus in German: Locus
locus in French: Locus (homonymie)
locus in Hebrew: לוקוס
locus in Japanese: 軌跡
locus in Dutch: Locus
locus in Polish: Locus

Synonyms, Antonyms and Related Words

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