A vocabulary of landscape — a landscape of words 1133 entries patterned ground PAT-ernd grownd The distinctive geometry of frost cracks in the tundra — circles, polygons, and stripes formed by repeated freezing and thawing that sorts stones by size. Etymology English compound. Periglacial geomorphology term. ice/snow geology terrain ← Previous patina Next → peat Search · Browse · Surprise Me With a Word