Meaning of “complication” in the English Dictionary

american-english dictionary

"complication" in British English

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complicationnoun

uk /ˌkɒm.plɪˈkeɪ.ʃən/ us /ˌkɑːm.pləˈkeɪ.ʃən/

C1 [ C or U ] something that makes a situation more difficult, or the act of doing this:

Dave couldn't find his passport at the airport and then there were further complications when Fiona lost her baggage.
If any complications arise, let me know and I'll help.

C2 [ C ] an extra medical problem that makes it more difficult to treat an existing illness:

If there are no complications, the doctor says that she'll be able to come home within two weeks.

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

"complication" in American English

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complicationnoun [ C ]

us /ˌkɑm·plɪˈkeɪ·ʃən/

something that makes a situation more difficult:

This complication had not been foreseen.

medical A complication is a problem that develops from an existing illness, making treatment more difficult:

He died from complications of diabetes.

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