Full Definition of FISSION. 1. : a splitting or breaking up into parts. 2. : reproduction by spontaneous division of the body into two or more parts each of which grows into a complete organism. 3. : the splitting of an atomic nucleus resulting in the release of large amounts of energy.
Milligram is a small unit of mass in metric system and used commonly in medicine and pharmacy etc. The abbreviation is mg. For milligrams to grams converter, please go to milligrams to grams.
A milligram measures mass while a milliliter measures volume. Mass relates to weight, or the amount of matter in a thing, while volume is how much space a substance takes up. This comparison is similar to comparing a pound (weight) to a cup (volume). Continue Reading.