a succession of stages or operations or processes or units; "progressing in severity as though a cascade of genetic damage was occurring"; "separation of isotopes by a cascade of processes"
a small waterfall or series of small waterfalls
arrange (open windows) on a computer desktop so that they overlap each other, with the title bars visible
the state of needing something that is absent or unavailable; "there is a serious lack of insight into the problem"; "water is the critical deficiency in desert regions"; "for want of a nail the shoe was lost"
a contraction of economic activity resulting in a decline of prices
(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"