quadrat

1. (letterpress typography, obsolete) A quad; a blank metal block used to fill space in lines of type.Examples: "If his Title be ſhort, he Sets it in the middle of the Line, by Setting Quadrats on both ſides: If his Title be long, he Sets the middle Line in the middle: If it make three or more Lines, he Indents the firſt with an m Quadrat, and the other with two m Quadrats."; "The footsticks may be a trifle shorter than the width of two pages and the gutter; for as there should always be a line of quadrats, or a reglet cut to measure, at the foot of each page, the footstick may be a pica shorter without danger, on this account, of any thing falling out, when the form is lifted and it thus prevents the side and foot sticks from binding when locked up."Synonyms: quad, spaceobsolete

2. (Egyptology) A virtual rectangular subdivision of a line or column of hieroglyphs within which a group of hieroglyphs is arranged.