filling in


Also found in: Idioms.

filling in

[¦fil·iŋ ¦in]
(graphic arts)
A condition in letterpress or offset lithography in which the area between the halftone dots is filled with ink or ink is plugging up the type.
References in periodicals archive ?
If you are filling in a series or buying duplicate copies for something that is really popular, purchase Turtleback, Follett bound, or paperback copies of the fill-ins.