a method of weights found in pharmacy and based on an ounce add up to 480 grains and a pound corresponding to 12 ounces. It has been mostly replaced by steps of metric system.
the device of loads wherein health prescriptions were formerly compounded. The lb and ounce are the same as in Troy fat; they differ just in the way of subdivision. The ounce is divided into 8 drams, 24 scruples, 480 grains. See Troy fat.
any weight product used in drugstore; an ounce is equal to 480 grains and a pound is equal to 12 ounces