Meaning of “claustrophobia” in the English Dictionary

"claustrophobia" in British English

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claustrophobianoun [ U ]

uk /ˌklɒs.trəˈfəʊ.bi.ə/ us /ˌklɑː.strəˈfoʊ.bi.ə/

fear of being in closed spaces:

He suffers from claustrophobia so he never travels on underground trains.
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(Definition of “claustrophobia” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"claustrophobia" in American English

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claustrophobianoun [ U ]

us /ˌklɔ·strəˈfoʊ·bi·ə/

an extreme fear of being in an enclosed or crowded space

claustrophobic
adjective us /ˌklɔ·strəˈfoʊ·bɪk/

I feel claustrophobic in an elevator.

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