coarse sand: translation
1. A geologic term for a sand particle having a diameter in the range of 0.5–1 mm (500–1000 microns, or 1 to zero phi units.)
2. An engineering term for a sand particle having a diameter in the range of 2 mm.
3. A soil term used in the U.S. for a sand particle having a diameter in the range of 0.5–1 mm (the diameter range recognized by the International Society of Soil Science is 0.2–2 mm).