incursion

UK: /ɪnˈkɜː^rʃ^ən/ US: /ɪnˈkɝʒən, -ʃən/ ,(in kûr′zhən, -shən)

WordReference Random House Learner's Dictionary of American English © 2025

in•cur•sion /ɪnˈkɜrʒən, -ʃən/   n. [countable]

1. a hostile invasion of another's territory;
   a raid:
   enemy incursions during the night.

See -cur-.

WordReference Random House Unabridged Dictionary of American English © 2025

in•cur•sion  (in kûr′zhən, -shən), n. 

1. a hostile entrance into or invasion of a place or territory, esp. a sudden one;
   raid:
   The bandits made brief incursions on the village.
2. a harmful inroad.
3. a running in:
   the incursion of sea water.

• Latin incursiōn- (stem of incursiō) raid, equivalent. to incurs(us) (past participle of incurrere to incur) + -iōn- -ion; see excursion
• late Middle English 1400–50

Synonyms

• 1. sortie, foray, attack.

Collins Concise English Dictionary © HarperCollins Publishers::

incursion / ɪnˈkɜːʃən/ noun

1. a sudden invasion, attack, or raid
2. the act of running or leaking into; penetration

Etymology: 15th Century: from Latin incursiō onset, attack, from incurrere to run into; see incur

incursive / ɪnˈkɜːsɪv/ adjective