|≈||approximately equal to|
|digits||indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …)|
The short hundredweight or cental of 100 lb (45.359237 kg) is used in the US and Canada.
microgram or microgramme is equal to 10-6 gram (unit of mass), comes from a combination of the metric prefix micro (µ) with the gram (g). Plural name is micrograms.