S

Saturation : A perceptual term referring to the colorimetry quantity 'excitation purity' of a color. Hue can be used together with saturation and luminance to define a HSL color space.
Scaling : The process in which the size of an image or geometric representation is modified by multiplying each component of the representation's coordinates by constant factors. Scaling and many other simple transformations can be done simultaneously if positions and directions are represented in homogeneous coordinates.
Screen Capture : The process of capturing what is currently displayed on your monitor.

Snap To : The process of moving a point to a specific grid location.
Specular : The highlight of an object that has a shiny surface.

Spotlight : A light that casts its rays in a cone shaped pattern.
Subtractive Color Model : The color model in which colors are produced by combining various percentages of the subtractive primaries, cyan, magenta, and yellow. Four color printing uses cyan, yellow, and magenta (CMY) inks. In theory, combining 100% of each cyan, magenta, and yellow should produce a pure black. In practice, however, the combining of cyan, magenta, and yellow inks does not produce a pure black due to impurities in inks. For this reason, black ink (K) is used in addition to the cyan, magenta, and yellow inks in four-color printing.