unerosive
/ˌʌnɪˈroʊsɪv/; un- + erosive
Definitions
1. adjective
not causing erosion or wearing away
“The unerosive paint was chosen to protect the monument’s surface.”
2. adjective
not tending to cause erosion or wearing away
“The unerosive properties of the new concrete mixture made it ideal for construction projects.”