Meaning of “complication” - Learner’s Dictionary

complication

noun [ C ] uk us /ˌkɒmplɪˈkeɪʃən/
DIFFICULTY

something that makes a situation more difficult

MEDICAL PROBLEM

a new medical problem that develops when you are already sick:

Eye problems can be a complication of diabetes.

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