Zone of illuviation
.
zone of illuviation
see b horizon.
zone of acc-mulation
see b horizon.
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noun the ground below the water table
- Zone plate
a plate or screen with alternating opaque and transparent concentric rings that focus light by diffraction.
- Zone refining
a process of purifying any of various metals and other materials, as germanium or silicon, by p-ssing it in bar form through an induction coil. noun a technique for producing solids of extreme purity, esp for use in semiconductors. the material, in the form of a bar, is melted in one small region that is […]
- Zone something out
zone something out noun (also zoner) a person intoxicated with narcotics, esp habitually so; sp-ce cadet (1960s+ narcotics) verb to be inattentive; be hazily preoccupied: he zoned so bad he didn’t even hear the teacher call his name/ i was kind of zonin’, checking things out (1980s+) [fr ozone, ”a very high level of the […]
- Zone system
a system for envisioning the values to appear in a black-and-white print and for determining exposure and development, based on a scale of shades ranging from 0 (black) to ix (white). historical examples when the introduction of the zone system was first advocated in hungary it was opposed by just such men and just such […]