revolution
A2Substantiv/US /rˌɛvəlˈuːʃən/ rĕv-əl-O͞OSH-ən; UK /rˌɛvəlˈuːʃən/ rĕv-əl-O͞OSH-ən/
The act of revolving, or turning round on an axis or a center; the motion of a body round a fixed point or line; rotation; as, the revolution of a wheel, of a top, of the earth on its axis, etc.
