👉 Propygidium is a chemical compound that is composed of two carbon atoms bonded together in a linear arrangement. It has a molecular weight of 128 grams per mole. The name "propygidium" is derived from the Latin word "pro-" meaning "propane" and "pyro-" meaning "fire", as propylene (the first chemical form of propane) is considered to be a combustion product that ignites when heated with oxygen, while propyl (the second