oscillate

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os·cil·late / ˈäsəˌlāt/ • v. [intr.] 1. move or swing back and forth at a regular speed: a pendulum oscillates about its lowest point. ∎  fig. waver between extremes of opinion, action, or quality: he was oscillating between fear and bravery. 2. Physics vary in magnitude or position in a regular manner around a central point. ∎  (of a circuit or device) cause the electric current or voltage running through it to behave in this way. DERIVATIVES: os·cil·la·tion / ˌäsəˈlāshən/ n. os·cil·la·to·ry / əˈsiləˌtôrē/ adj.

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