phenomenon

US /fɪˈnɑməˌnɑn, -nən/

UK /fə'nɒmɪnən/

B1
n. (c./u.)Noun (Countable/Uncountable)Unusual event, fact that can be studied
The popularity of The Beatles is a worldwide phenomenon
n. (c./u.)Noun (Countable/Uncountable)Interesting or unusual person, group
The Beatles were a huge phenomenon when they were playing together
n. (c./u.)Noun (Countable/Uncountable)A fact or situation that is observed to exist or happen, especially one whose cause or explanation is in question.
Gravity is a natural phenomenon.

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