Meaning of “phenomenon” in the English Dictionary

"phenomenon" in British English

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phenomenonnoun [ C ]

uk /fəˈnɒm.ɪ.nən/ us /fəˈnɑː.mə.nɑːn/ plural phenomena uk // us

phenomenon noun [ C ] (EXISTING THING)

C1 something that exists and can be seen, felt, tasted, etc., especially something unusual or interesting:

Gravity is a natural phenomenon.
Do you believe in the paranormal and other psychic phenomena?
There's evidence to suggest that child abuse is not just a recent phenomenon.

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phenomenon noun [ C ] (SUCCESS)

someone or something that is extremely successful, often because of special qualities or abilities:

The Beatles were a phenomenon - nobody had heard anything like them before.

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

"phenomenon" in American English

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us /fɪˈnɑm·əˌnɑn, -nən/

phenomenon noun (EXPERIENCE)

[ C ] plural phenomena /fɪˈnɑm·ə·nə/ anything that is or can be experienced or felt, esp. something that is noticed because it is unusual or new:

We discussed the ever-growing popularity of talk radio, and wondered how to explain this phenomenon.

phenomenon noun (SPECIAL PERSON/THING)

[ C usually sing ] plural phenomenons someone or something special, esp. because it is completely different or extremely unusual:

He was a kind of phenomenon, an actor running for president.

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