a short trip or outing to some place, usually for a special purpose and with the intention of a prompt return: a pleasure excursion; a scientific excursion.
2.
a trip on a train, ship, etc., at a reduced rate: weekend excursions to mountain resorts.
3.
the group of persons making such a journey: an excursion of tourists.
4.
a deviation or digression: excursions into futile philosophizing.
5.
Physics. the displacement of a body or a point from a mean position or neutral value, as in an oscillation.
6.
an accidental increase in the power level of a reactor, usually forcing its emergency shutdown.
7.
Machinery.
a.
the range of stroke of any moving part.
b.
the stroke itself.
8.
Obsolete. a sally or raid.
–verb (used without object)
9.
to go on or take an excursion.
–adjective
10.
of, pertaining to, or intended for use on excursions: an excursion fare; an excursion bus.
[Origin: 1565–75; < L excursiōn- (s. of excursiō). See excursus, -ion]
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