1. [ adjective ] marked by a tendency to spread especially into healthy tissue

"invasive cancer cells"

Related terms: confined aggressive aggressive
2. [ adjective ] (medicine) relating to a technique in which the body is entered by puncture or incision
Related terms: noninvasive medicine
3. [ adjective ] involving invasion or aggressive attack
Synonyms: invading incursive

"invasive war"

Related terms: offensive
4. [ adjective ] gradually intrusive without right or permission
Synonyms: trespassing encroaching

"we moved back from the encroaching tide" "invasive tourists" "trespassing hunters"

Related terms: intrusive
Similar spelling:   invasion