1. [ noun ] (economics) a contraction of economic activity resulting in a decline of prices
Related terms: inflation disinflation economic_process deflate
2. [ noun ] (geology) the erosion of soil as a consequence of sand and dust and loose rocks being removed by the wind

"a constant deflation of the desert landscape"

Related terms: erosion geology
3. [ noun ] the act of letting the air out of something
Related terms: inflation decrease deflate
Similar spelling:   deflationary