Definition of locus
noun (plural loci /ˈlōˌsī, -ˌsē, -ˌkē, -ˌkī/)
1 technical a particular position, point, or place:it is impossible to specify the exact locus in the brain of these neural events the effective or perceived location of something abstract:the real locus of power is the informal council Genetics the position of a gene or mutation on a chromosome.
2 Mathematics a curve or other figure formed by all the points satisfying a particular equation of the relation between coordinates, or by a point, line, or surface moving according to mathematically defined conditions.
