(physics) Expressed or existing only in terms of discrete quanta; limited by the restrictions of quantization. from 20th c.
2011, Brian Cox & Jeff Forshaw, The Quantum Universe, Allen Lane 2011, p. 96:This is very clear for the standing waves on a guitar string: the fundamental has a wavelength of twice the length of the string, and the next longest allowed wavelength is equal to the length of the string. There is no standing wave with a wavelength between these two and so we can say that the allowed wavelengths on a guitar string are quantized.
