threatened
v. B2 Upper Intermediate US //ˈθɹɛtənd// UK //θɹˈɛtənd// threat·ened
v. at risk of disappearing or being harmed. You use this to describe animals or plants that might become extinct if we do not protect them.
v. at risk of extinction or significant population decline. Often used in a technical sense to describe a species that is likely to become endangered in the near future.
The giant panda was once a threatened species.
Local conservationists are working to protect the threatened wetlands from new housing developments.
Biologists have identified several threatened coral reefs that require immediate intervention to prevent a total collapse of the local marine ecosystem.
Usage
Typically used as an attributive adjective before a noun like 'species', 'habitat', or 'population'.