Definition of quantum leap noun from the Oxford Advanced Learner's Dictionary


quantum leap

BrE BrE//ˌkwɒntəm ˈliːp//
; NAmE NAmE//ˌkwɑːntəm ˈliːp//
(less frequent quantum jump)
jump to other results
a sudden, great and important change, improvement or development This discovery marks a quantum leap forward in the fight against cancer.
See the Oxford Advanced American Dictionary entry: quantum leap