|Origin:||, past participle of oscillare 'to swing', from oscillum 'swing'|
to keep changing between two extreme amounts or limits:
The stock market is oscillating wildly at the moment.
His income oscillated between £1500 and £2000 a month.
to keep changing between one feeling or attitude and another
Her attitude towards me oscillated between friendship and hostility.
to move backwards and forwards in a regular way:
The needle on the dial began to oscillate.
if an electric current oscillates, it changes direction very regularly and very frequently