os ‧ cil ‧ late /ˈɒsəleɪt, ˈɒsɪleɪt $ ˈɑː-/ BrE AmE verb [intransitive]
[ Date: 1700-1800 ; Language: Latin ; Origin: past participle of oscillare 'to swing' , from oscillum 'swing' ]
1 . formal to keep changing between two extreme amounts or limits:
The stock market is oscillating wildly at the moment.
oscillate between
His income oscillated between £1,500 and £2,000 a month.
2 . formal to keep changing between one feeling or attitude and another
oscillate between
Her attitude towards me oscillated between friendship and hostility.
3 . to move backwards and forwards in a regular way:
The needle on the dial began to oscillate.
4 . technical if an electric current oscillates, it changes direction very regularly and very frequently