Meaning of “proliferate” in the English Dictionary

"proliferate" in British English

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proliferateverb [ I ]

uk /prəˈlɪf.ər.eɪt/ us /prəˈlɪf.ə.reɪt/ formal
proliferation
noun [ U ] uk /prəˌlɪf.ərˈeɪ.ʃən/ us /prəˌlɪf.əˈreɪ.ʃən/

The past two years have seen the proliferation of TV channels.

(Definition of “proliferate” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"proliferate" in American English

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proliferateverb [ I ]

us /prəˈlɪf·əˌreɪt/

to increase greatly in number or amount, usually quickly:

Amusement and theme parks are proliferating across the country.
proliferation
noun [ U ] us /prəˌlɪf·əˈreɪ·ʃən/

The proliferation of cell phones has changed how we communicate.

(Definition of “proliferate” from the Cambridge Academic Content Dictionary © Cambridge University Press)