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English definition of “oscillate”

oscillate

verb [I]  /ˈɑs·əˌleɪt/ us  
to move repeatedly from side to side or up and down between two points, or to vary between two states or amounts, or feelings or opinions: She oscillates between cooperation and hostility.
oscillation
noun [C/U]  /ˌɑs·əˈleɪ·ʃən/ us  
Mealtimes strongly influence this daily oscillation in blood sugar, or glucose, concentrations.
(Definition of oscillate from the Cambridge Academic Content Dictionary © Cambridge University Press)
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