say it: di-FLAY-shuhn
deflation is a noun meaning "(geology) the erosion of soil as a consequence of sand and dust and loose rocks being removed by the wind". It carries 3 recorded senses.
(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”
geology
a contraction of economic activity resulting in a decline of prices
the act of letting the air out of something
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for deflation come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.