■ noun
1》 Physics an abrupt transition of an electron, atom, etc. from one state to another, with the absorption or emission of a quantum.
2》 (also quantum leap ) a sudden large increase or advance.
■ noun
1》 Physics an abrupt transition of an electron, atom, etc. from one state to another, with the absorption or emission of a quantum.
2》 (also quantum leap ) a sudden large increase or advance.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004