n.
Pronunciation: ik- ' sk ə r-zh ə n
Function: noun
Etymology: Latin excursion-, excursio, from excurrere
Date: circa 1587
1 a : a going out or forth : EXPEDITION b (1) : a usually brief pleasure trip (2) : a trip at special reduced rates
2 : deviation from a direct, definite, or proper course especially : DIGRESSION <needless excursion s into abstruse theory>
3 : a movement outward and back or from a mean position or axis also : the distance traversed : AMPLITUDE <the excursion of a piston>