What is one hundredth of a gram called?

One hundredth of a gram is referred to as a centigram. In the metric system, the prefix "centi-" denotes a factor of one hundredth (1/100), making a centigram equal to 0.01 grams. This is an important unit of measurement within the metric system, particularly in fields that require precise weight measurements, such as chemistry or pharmacology. Understanding the metric prefixes is crucial for converting between units and ensuring accuracy in calculations.

In comparison, a milligram denotes one thousandth of a gram (0.001 grams), which is a smaller unit than a centigram. A megagram, equivalent to one million grams, is significantly larger and not applicable in this context. A ton is a much larger unit of measurement typically used for heavier items and is not directly related to grams at this scale.