a process of purifying any of various metals and other materials, as germanium or silicon, by passing it in bar form through an induction coil.
- Zone of illuviation
. zone of illuviation See B horizon. zone of accumulation See B horizon.
- Zone of saturation
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 out
zone out noun (also zoner) A person intoxicated with narcotics, esp habitually so; space 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 atmosphere”] […]
- Zone refining
a process of purifying any of various metals and other materials, as germanium or silicon, by passing 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 […]