Definition of locus
noun (plural loci /-sʌɪ, -kʌɪ, -kiː/)
- 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: a parabola is the locus of a point that moves so as to be equidistant from a fixed point and a straight line
- 3 Lawshort for locus standi.
early 18th century: from Latin, 'place'