Main Entry: os·cil·la·tion

Pronunciation: \ˌä-sə-ˈlā-shən\

Function: noun

Date: 1658

1 : the action or state of oscillating
2 : variation, fluctuation
3 : a flow of electricity changing periodically from a maximum to a minimum; especially : a flow periodically changing direction
4 : a single swing (as of an oscillating body) from one extreme limit to the other

— os·cil·la·tion·al \-shnəl, -shə-n^əl\ adjective