Megaton refers to a unit of measure for the explosive power of a nuclear weapon. However, there are several synonyms that can be used in place of megaton, such as kiloton, which refers to a unit of measure equivalent to 1,000 tons of TNT explosive power. Another synonym is gigaton, which is equivalent to one billion tons of TNT. Additionally, there is teraton, which is a unit of measure equivalent to one trillion tons of TNT. These synonyms are typically used in discussions relating to military, geological, and environmental matters, and can be used interchangeably with megaton, depending on the context in which they are being used.