- 1[intransitive] oscillate (between A and B) (formal) to keep changing from one extreme of feeling or behaviour to another, and back again synonym swing Her moods oscillated between depression and elation.
- 2[intransitive] (physics) to keep moving from one position to another and back again Watch how the needle on the dial oscillates.
- 3 [intransitive] (physics) (of an electric current, radio waves, etc.) to change in strength or direction at regular intervals See related entries: Electronics Word Origin early 18th cent.: from Latin oscillat-
BrE BrE//ˈɒsɪleɪt//; NAmE NAmE//ˈɑːsɪleɪt//Verb Forms present simple I / you / we / they oscillate
BrE BrE//ˈɒsɪleɪt//; NAmE NAmE//ˈɑːsɪleɪt//he / she / it oscillates
BrE BrE//ˈɒsɪleɪts//; NAmE NAmE//ˈɑːsɪleɪts//past simple oscillated
BrE BrE//ˈɒsɪleɪtɪd//; NAmE NAmE//ˈɑːsɪleɪtɪd//past participle oscillated
BrE BrE//ˈɒsɪleɪtɪd//; NAmE NAmE//ˈɑːsɪleɪtɪd//-ing form oscillating
BrE BrE//ˈɒsɪleɪtɪŋ//; NAmE NAmE//ˈɑːsɪleɪtɪŋ//Electronics