locus
Sign in to saveAlso known as geometric locus, geometrical locus
set of points whose location satisfies or is determined by one or more specified conditions
~7 min read
Encyclopedic overview
Each curve in this example is a locus defined as the conchoid of the point P and the line l. In this example, P is 8 cm from l.
In geometry, a locus (plural: loci; Latin for 'place, location') is a set of all points (commonly, a line, a line segment, a curve or a surface), whose location satisfies or is determined by one or more specified conditions.
Excerpted from Wikipedia’s “locus” article, available under the CC BY-SA 4.0 licence.