Inflation

Part of speech: noun (n.)

1. The act or process of inflating, or the state of being inflated, as with air or gas; distention; expansion; enlargement. Boyle.

2. The state of being puffed up, as with pride; conceit; vanity. B. Jonson.

3. Undue expansion or increase, from overissue; -- said of currency. [U.S.]