A quadrat, in ecology and geography, is a frame used to isolate an area for study.
Quadrat may also refer to:
Quadrat (hieroglyph block), a virtual rectangle or square in Egyptian hieroglyphic text Quadrat (patience), a solitaire card game Quad (typography), originally quadrat, a metal spacer used in letterpress typesetting
See also Quadrate (disambiguation) Quadratic (disambiguation) Quadrant (disambiguation)