|the plural of locus|
|—n , pl loci|
|1.||(in many legal phrases) a place or area, esp the place where something occurred|
|2.||maths a set of points whose location satisfies or is determined by one or more specified conditions: the locus of points equidistant from a given point is a circle|
|3.||genetics the position of a particular gene on a chromosome|
locus lo·cus (lō'kəs)
n. pl. lo·ci (-sī', -kē, -kī')
A place; site.
The position that a given gene occupies on a chromosome.
plur. loci (loh-seye, loh-keye)
In geometry, the set of all points (and only those points) that satisfy certain conditions; these points form a curve or figure. For example, the locus of all points in space one foot from a given point is a sphere having a radius of one foot and having its center at the given point. The locus of all points in a plane one foot from a given point is a circle having a radius of one foot and having its center at the given point.