the set of all points, lines, or surfaces that satisfy a given requirement
the chromosomal position of a gene as determined by its linear order relative to the other genes on that chromosome
the place where something is situated or occurs site location was the culture of medicine in the beginning dispersed from a single focus or did it arise in several loci? S. C. Harvey
center of activity, attention, or concentration in democracy the locus of power is in the people H. G. Rickover