WordWeb Online

1. The scene of any event or action (especially the place of a meeting)
   - 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"

Derived forms: loci

Type of: scene, set, site, situation

Encyclopedia: Locus