incursion Meaning, Definition & Usage

  1. noun the act of entering some territory or domain (often in large numbers)
    • the incursion of television into the American living room
  2. noun an attack that penetrates into enemy territory
    penetration.
  3. noun the mistake of incurring liability or blame

WordNet

In*cur"sion noun
Etymology
L. incursio: cf. F. incursion. See Incur.
Definitions
  1. A running into; hence, an entering into a territory with hostile intention; a temporary invasion; a predatory or harassing inroad; a raid.
    The Scythian, whose incursions wild Have wasted Sogdiana. Milton.
    The incursions of the Goths disordered the affairs of the Roman Empire. Arbuthnot.
  2. Attack; occurrence. Obs.
    Sins of daily incursion. South.
    Syn. -- Invasion; inroad; raid; foray; sally; attack; onset; irruption. See Invasion.

Webster 1913