noun
(sciences) An area of land, marked for studying its plants, animals, soil, natural processes, etc.
verb
To place a quadrat, or divide into quadrats.
noun
(letterpress typography, obsolete) A quad; a blank metal block used to fill space in lines of type.
(Egyptology) A virtual rectangular subdivision of a line or column of hieroglyphs within which a group of hieroglyphs is arranged.