Definition of the word incursion

The word "incursion" has a fascinating etymology. It originated in the 15th century from the Latin "incursio," which means "a running or rushing in." This Latin term is a combination of "in" (meaning "in" or "into") and "currere" (meaning "to run" or "to rush"). In English, "incursion" initially referred to a military attack or an invading force's penetration into an enemy's territory. Over time, the meaning expanded to include any sudden or unexpected entry or invasion into a particular sphere or area, such as politics, business, or even thought. Today, "incursion" is often used to describe a sudden or uninvited entry into someone's life, space, or territory, whether physical or metaphorical. For example, "The new company's incursion into the market disrupted the industry's balance."