Collins COBUILD Advanced Learner's English Dictionary - sustainable

1. You use sustainable to describe the use of natural resources when this use is kept at a steady level that is not likely to damage the environment. Try to buy wood that you know has come from a sustainable source. ADJ 2. A sustainable plan, method, or system is designed to continue at the same rate or level of activity without any problems. The creation of an efficient and sustainable transport system is critical to the long-term future of London. ADJ