The reciprocal succession of things in time or place; the act of following and being followed by turns; alternate succession, performance, or occurrence; as, the alternation of day and night, cold and heat, summer and winter, hope and fear.
The response of the congregation speaking alternately with the minister.
alternation in French is alternance
alternation in German is Wechsel, Wechselbetrieb, Halbwelle
alternation in Spanish is alternancia, alternacion