In typography, a block of type to which no leading has been added. See Set Solid.
In printing, an image area containing no halftones, comprising an unbroken film of ink.
[One possible representation of the interior of a fill-area or polygon primitive. The interior of the image is filled with the solid color specified by the fill-area or polygon color-index attribute.
The characteristic of a computer program that has been completely debugged and works as it was intended.]