incursion
noun /ɪnˈkɜːʃn/
/ɪnˈkɜːrʒn/
(formal)- incursion (into something) a sudden attack on a place by foreign armies, etc.
- Border patrols were increased to deter further incursions by foreign forces.
- Government troops made an incursion into territory held by the rebels.
- incursion (into something) the sudden appearance of something in a particular area of activity that is either not expected or not wanted
Word Originlate Middle English (formerly also as encursion): from Latin incursio(n-), from the verb incurrere, from in- ‘towards’ + currere ‘run’.