1. relating to a technique in which the body is entered by puncture or incision • Ant: noninvasive • Topics: medicine, medical specialty 2. marked by a tendency to spread especially into healthy tissue - invasive cancer cells • Ant: confined • Similar to: aggressive, fast-growing, strong-growing • Derivationally related forms: invade 3. involving invasion or aggressive attack - invasive war • Syn: incursive, invading • Similar to: offensive • Derivationally related forms: invade 4. gradually intrusive without right or permission - we moved back from the encroaching tide - invasive tourists - trespassing hunters • Syn: encroaching, trespassing • Similar to: intrusive • Derivationally related forms: invade
