Meaning of QUANTUM in English

QUANTUM

1.

In physics, ~ theory and ~ mechanics are concerned with the behaviour of atomic particles.

Both ~ mechanics and chaos theory suggest a world constantly in flux.

ADJ: ADJ n

2.

A ~ leap or ~ jump in something is a very great and sudden increase in its size, amount, or quality.

The vaccine represents a ~ leap in healthcare...

ADJ: ADJ n

Collins COBUILD.      Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) .