What is "miniaturisation"

Usage examples of "miniaturisation".

He had a long pale narrow face, thin black hair parted in the middle and brushed almost straight back, rimless glasses, an aquiline nose and on the upper lip a thin black line that, on closer inspection, still looked like a thin black line, miniaturisation of the moustache brought to an almost impossible state of perfection.

It had only two Loctal valves, it had an aerial that looked exactly like a washing-line, it ran from the mains or by a six-volt battery, and, weighing in at a paltry thirty-two pounds, it was a miracle of miniaturisation.