invazní

Invazní is an adjective used in Czech and Slovak to describe something that invades or spreads into another environment. In ecology, it is commonly applied to invasive species (invazní druhy), non-native organisms that establish themselves, proliferate, and disrupt local ecosystems, habitats, or economies. In medicine and biology, invazní describes processes or lesions that invade adjacent tissues, such as invazivní rakovina (invasive cancer) or invazivní postupy (invasive procedures). The term can also be used more broadly to refer to aggressive or intrusive actions in other contexts, though usage may vary by field and language.

Etymology and usage notes: invazní derives from Latin invasio and entered Czech and Slovak via multiple languages, with phonetic adaptations in the modern forms. The negative form is neinvazní (non-invasive), used to describe things that do not invade or spread into other tissues or areas.

See also: invasive species, non-invasive, invasive tumor.