1 Either an acute injury near the nail or anything that causes the nail to be damaged repetitively (such as playing soccer) can also cause an ingrown nail.  If a member of your family has an ingrown toenail, then you are more likely to develop one, too.
The troy ounce (symbol and abbreviation: ozt) is a non-SI unit of mass commonly used to gauge the weight of precious metals. One troy ounce (ozt) = 31.1034768 grams (g) = 1.09714286 ounces (oz) = 480 grains (gr).
A pound or pound-mass (abbreviations: lb, lbm, lbm or â) is a unit of mass used mainly in the imperial and United States customary. The most common definition today is the international avoirdupois pound which defined as exactly 0.45359237 kilograms, and which is divided into 16 avoirdupois ounces.