quantum leap

/หˆkwษ’ntษ™m liหp/

IPA: /K W AA1 N T AH0 M L IY0 P/

noun
  1. 1

    The discontinuous change of the state of an electron in an atom or molecule from one energy level to another.

  2. 2

    An abrupt, extreme change. (metaphorical)

Synonyms

Source: https://en.wiktionary.org/wiki/quantum%20leap