locus
Definition from Wiktionary, the free dictionary
Contents |
English [edit]
Etymology [edit]
From Latin locus.
Pronunciation [edit]
Noun [edit]
locus (plural loci)
- A place or locality, especially a centre of activity or the scene of a crime.
- The cafeteria was the locus of activity.
- (mathematics) 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.
- (genetics) A fixed position on a chromosome that may be occupied by one or more genes.
Usage notes [edit]
- sometimes confused with locust
Related terms [edit]
Translations [edit]
place or locality
|
set of all points given by an equation or condition
position on a chromosome
Latin [edit]
Etymology [edit]
From Old Latin stlocus from Proto-Indo-European *stel- (“to put, place, locate”).
Pronunciation [edit]
Noun [edit]
locus (genitive locī); m, second declension
Inflection [edit]
The inflection is irregular. For senses one and two, the declension follows the regular masculine pattern:
| Number | Singular | Plural |
|---|---|---|
| nominative | locus | locī |
| genitive | locī | locōrum |
| dative | locō | locīs |
| accusative | locum | locōs |
| ablative | locō | locīs |
| vocative | loce | locī |
For sense three, the plural forms become neuter in gender and form:
| Number | Singular | Plural |
|---|---|---|
| nominative | locus | loca |
| genitive | locī | locōrum |
| dative | locō | locīs |
| accusative | locum | loca |
| ablative | locō | locīs |
| vocative | loce | loca |
Descendants [edit]
Spanish [edit]
Noun [edit]
locus m (plural loci)
