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English definition of “haemifacial spasm”

haemifacial spasm

noun [C] specialized (US hemifacial spasm)     /hiː.mɪˌfeɪ.ʃəl ˈspæz.əm/ US  /ˈhiː.məˌfeɪ.ʃəl ˈspæz.əm/
a spasm (= occasion when a muscle suddenly becomes tighter) affecting one side of the face: Hemifacial spasms are caused by a blood vessel pressing on one of the nerves coming from the brain.Health problems in specific parts of the body
(Definition of haemifacial spasm noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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