An act, instance of, or state of expansion or increase in size, especially by injection of a gas.
The Inflation of the balloon took five hours.
(economics) An increase in the general level of prices or in the cost of living.
(economics) A decline in the value of money.
(economics) An increase in the quantity of money, leading to a devaluation of existing money.
Undue expansion or increase, as of academic grades.
(cosmology) An extremely rapid expansion of the universe, theorised to have occurred very shortly after the big bang.