This is the 9562nd most frequent Catalan word.
invasives
"Invasives" means "invasive" (referring to something spreading aggressively or undesirably).
The term 'invasives' here is used as an adjective describing species that spread and pose a risk.
Les espècies invasives són un perill per a la biodiversitat.
Invasive species are a threat to biodiversity.
In this context, 'non invasives' refers to medical procedures that do not require entering the body.
Les tècniques quirúrgiques no invasives són preferides pels pacients.
Non-invasive surgical techniques are preferred by patients.
Again, 'invasives' describes treatments, particularly their nature of not intruding physically into the body.