Webster’s Revised Unabridged Dictionary · 1913 Macula Mac′u·la (măk′ū·lȧ), n.; pl. Maculæ (#). [L., spot, stain, blot. See Mail armor, and cf. Mackle, Macule.] 1. A spot, as on the skin, or on the surface of the sun or of some other luminous orb. 2. (Zoöl.) A rather large spot or blotch of color. ‹ Mactra Maculate ›