macula

n 1: a cooler darker spot appearing periodically on the surface

of the sun; associated with a strong magnetic field

[syn: {sunspot}]

2: a yellowish central area of the retina that is rich in cones

[syn: {macula lutea}, {macular area}, {yellow spot}]

3: a patch of skin that is discolored but not usually elevated;

caused by various diseases [syn: {macule}]

Macaulay

A {symbolic mathematics} package for {commutative algebra},

{algebraic geometry} and {cohomology}, written in {C} by Mike

Stillman and Dave Bayer

in 1977. Version 3 runs on {Sun},

{Macintosh} and {Amiga}.

{(ftp://zariski.harvard.edu/)}

(1994-10-12)