Answer: quantizing

AnswerCrossword Clue
quantizingQUANTIZE, to express in terms of quanta, also QUANTISE
quantizingApproximate (a continuously varying signal) by one whose amplitude is restricted to a prescribed set of values
quantizingApply quantum theory to, esp. form into quanta, in particular restrict the number of possible values of (a quantity) or states of (a system) so that certain variables can assume only certain discrete magnitudes