IPA: /ˌiːkoʊˈtɛrəˌrɪzəm/
KK: /ˌiːkoʊˈtɛrəˌrɪzəm/
The use of violence or sabotage to promote environmental causes or to protest against activities that harm the environment.
The group was accused of ecoterrorism after they damaged equipment at the logging site.
Ecoterrorism is formed from "eco-" (from Greek "oikos", meaning house or environment) and "terrorism" (from Latin "terror", meaning fear or fright). The term refers to the use of violence or intimidation in the pursuit of environmental causes, essentially creating fear in relation to environmental issues.
Think of 'eco-' as relating to the environment, and 'terrorism' as creating fear. This helps you remember that ecoterrorism involves instilling fear for environmental reasons.