1.Definition: a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field

Related Noun(s):sunspot

Category: General

2.Definition: a patch of skin that is discolored but not usually elevated; caused by various diseases

Related Noun(s):macule

Category: General

3.Definition: a small yellowish central area of the retina that is rich in cones and that mediates clear detailed vision

Category: General