Main Entry:

os·cil·la·tion

Pronunciation:

\ˌä-sə-ˈlā-shən\

Function:

noun

Date:

1658

1: the action or state of oscillating2: variation, fluctuation3: a flow of electricity changing periodically from a maximum to a minimum ; especially : a flow periodically changing direction4: 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