Definitionen
1.NounAn act, instance of, or state of expansion or increase in size, especially by injection of a gas or liquid."The inflation of the balloon took five hours."
2.NounAn increase in the quantity of money, leading to a devaluation of existing money, adjusted for by way of higher nominal values."Due to inflation, the monthly gym fee is rising by 10% from January."
3.NounUndue expansion or increase, as of academic grades.
4.NounAn extremely rapid expansion of the universe, theorized to have occurred very shortly after the Big Bang.
5.Noun↑ Burgess & Quevedo, "The Great Cosmic Roller-Coaster Ride", Scientific American, November 2007, p. 57.