megaproject
/ˈmɛɡəˌprɑdʒɛkt/
noun
- An extremely large and expensive project, often involving construction, engineering, or infrastructure.
- Many cities compete to host the Olympics because it brings funding for urban megaprojects.
- Building a dam that size is a megaproject requiring thousands of workers.
- The new high-speed rail network is a megaproject that will cost billions of dollars.
Synonyms