Lexic.us

Definition of Macula

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

2. Noun. A small yellowish central area of the retina that is rich in cones and that mediates clear detailed vision.

3. Noun. A patch of skin that is discolored but not usually elevated; caused by various diseases.

Definition of Macula

1. n. A spot, as on the skin, or on the surface of the sun or of some other luminous orb.

Definition of Macula

1. Noun. (anatomy) An oval yellow spot near the center of the retina of the human eye, histologically defined as having two or more layers of ganglion cells, responsible for detailed central vision. ¹

2. Noun. A spot, as on the skin, or on the surface of the sun or of some other luminous orb. ¹

3. Noun. A rather large spot or blotch of color. ¹

4. Noun. In planetary geology, an unusually dark area on the surface of a planet or moon. ¹

¹ Source: wiktionary.com

Definition of Macula

1. a spot [n -LAE or -LAS] : MACULAR [adj]

Medical Definition of Macula

1. 1. A stain, spot or thickening. 2. Often used alone to refer to the macula retinae. (10 Jan 1998)

Lexicographical Neighbors of Macula

macrurans macruroid macrurous macs mactate mactated mactates mactating mactation mactations

mactators mactra mactras macuahuitl macuahuitls macula (current term) macula adherens macula albida macula atrophica macula communicans

macula communis macula corneae macula cribrosa macula densa macula flava macula germinativa macula gonorrhoica macula lactea macula lutea

Literary usage of Macula

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Text Book of Physiology by Michael Foster (1900)
"The macula Lutea and Fovea Centralis. On the temporal side of the optic disc, at a distance of about 4 mm. from, and a little below the horizontal level of, ..."

2. A Textbook of Physiology by Michael Foster (1891)
"So that the macula presents a central depression, about '3 mm. in diameter, ... A vertical section through the macula lutea shews that, in contrast to the ..."

3. A Treatise on human physiology by John Call Dalton (1875)
"Secondly, the nerve cells of the ganglionic layer are more abundant in the macula lutea than elsewhere. Over the greater portion of the retina, according to ..."

4. Transactions of the American Ophthalmological Society Annual Meeting by American Ophthalmological Society (1876)
"I DESIRE to report a case of what I consider to be a hemorrhagic, or exudative process, involving the macula, caused by concussion of the retina or choroid, ..."

5. Dictionary of Philosophy and Psychology: Including Many of the Principal by James Mark Baldwin (1901)
"... the superior and external ampullae and the macula ... cochlear branch supplies, in addition to the cochlea, the posterior ampulla and the macula ..."

6. An Atlas of Ophthalmoscopy: With an Introduction to the Use of the ...by Otto Haab, Ernest Clarke by Otto Haab, Ernest Clarke (1895)
"The whole fundus is rather deficient in pigment, and the macula shows changes similar to ... In this case the changes are not limited to the macula region, ..."

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