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mac·u·la al·'bi·da, pl.
gray-white or white, rounded or irregularly shaped, slightly opaque patches or spots that are sometimes observed postmortem in the epicardium, especially in middle-aged or older persons; they result from fibrous thickening, and sometimes hyalinization, of the epicardium; similar lesions may also occur in the visceral layer of the peritoneum.
Etymology: L, macula, spot, albidare, to make white
A white mark found on the visceral layer of the peritoneum or epicardium in some contagious diseases.
See also: macula