Слово "quantum". Англо-русский словарь Мюллера

            Through the square of skin that had been left clear on his stomach, through the layers of flesh and organs whose names their owner himself did not know, through the mass of the toad-like tumour, through the stomach and entrails, through the blood that flowed along his arteries and veins, through lymph and cells, through the spine and lesser bones and again through more layers of flesh, vessels and skin on his back, then through the hard wooden board of the couch, through the four-centimetre-thick floor-boards, through the props, through the filling beneath the boards, down, down, until they disappeared into the very stone foundations of the building or into the earth, poured the harsh X-rays, the trembling vectors of electric and magnetic fields, unimaginable to the human mind, or else the more comprehensible quanta that like shells out of guns pounded and riddled everything in their path.

The news report on television was wrapping up, outlining yet again the White House’s quantum political leap forward and Senator Sexton’s disastrous slide.

has enabled such a quantum leap in the mobility of people,

Why? Because it is a quantum phenomenon. It's quantum physics.