What is inflation and why it occurs?

Inflation meant increasing the money supply

The rise in price of goods and services, or Consumer Price Index (CPI), when too much money chases too few goods on the market. ...

The rate of change in the prices of consumer goods. Usually, inflation is measured by the Consumer Price Index for All Urban Consumers, which is computed monthly by the US Department of Labor.

The rate at which the general level of prices for goods and services is rising.

The rate of increase of the general price level of all goods and services. (This should not be confused with increases in the prices of specific goods relative to the prices of other goods.)

An economic condition where there is an increase in the price of consumer goods, thereby eroding purchasing power.

An increase in the prices of goods and services that is generally expressed as an annual percentage increase in the Consumer Price Index, as compiled by the Department of Labor.

A condition of increasing prices. In Canada, inflation is generally measured by the Consumer Price Index.

The persistent and appreciable rise in the prices of goods and services. Moderate inflation is normally associated with periods of expansion and high employment--increasing dollars chasing a dwindling supply of goods. ...
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Increasing price levels. A loss in the purchasing power of money. When a dollar today is worth more than that dollar tomorrow.

Continued rise in the general price level in conjunction with a related drop in purchasing power. Sometimes referred to as an excessive movement in such price levels.

the number of dollars in circulation exceeds the amount of goods and services available for purchase; inflation results in a decrease in the dollar's value.

The value of a currency decreasing as prices of goods and services increase over time.

An increase in the amount of money or credit available in relation to the amount of goods or services available, which causes an increase in the general price level of goods and services. Over time, inflation reduces the purchasing power of a dollar, making it worth less.

A rapid expansion appearing as an early phase in some cosmological models, which solves several problems of cosmology.

A persistent rise in the general level of prices over time.

A rise in the general price level that results in a decline in the purchasing power of money.

The overall general upward price movement of goods and services in an economy, usually as measured by the Consumer Price Index and the Producer Price Index. ...

An overall increase in the general price level. Where inflation is rising, even though some prices may fall, the overall cost of living and cost of business rises because most prices increase. The rate of inflation is the percentage change (usually annualised) in a price level index. ...

The loss of purchasing power that results from a general increase in the price of goods and services.

An economic term describing conditions where overall prices for goods and services are rising.
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a general and progressive increase in prices; "in inflation everything gets more valuable except money"
(cosmology) a brief exponential expansion of the universe (faster than the speed of light) postulated to have occurred shortly after the big bang
ostentation: lack of elegance as a consequence of being pompous and puffed up with vanity
the act of filling something with air

Inflation is a rise in the general level of prices over time. It may also refer to a rise in the prices of a specific set of goods or services. In either case, it is measured as the percentage rate of change of a price index.