Etymology
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macula (n.)

plural maculae, "a spot, blotch," especially on the skin or eye, c. 1400, from Latin macula "spot, stain," used of various spots (sunspots, markings on minerals, etc.), from Proto-Italic *smalto-, which is of uncertain origin. The macula lutea of the eye, the yellow spot of the retina opposite the pupil (the position of the most distinct vision), is from 1848.

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Definitions of macula

macula (n.)
a cooler darker spot appearing periodically on the sun's photosphere; associated with a strong magnetic field;
Synonyms: sunspot
macula (n.)
a small yellowish central area of the retina that is rich in cones and that mediates clear detailed vision;
Synonyms: macula lutea / macular area / yellow spot
macula (n.)
a patch of skin that is discolored but not usually elevated; caused by various diseases;
Synonyms: macule
From wordnet.princeton.edu