long-term study
nounUK /ˌlɒŋ tɜːm ˈstʌdi/
US /ˌlɔːŋ tɜːrm ˈstʌdi/
A long-term study is a research project that follows people or things for many years.
The long-term study showed that kids who read every day do better in school.
RELATED WORDS
OTHER MEANINGS
2. A careful look at something over a long period to see how it changes.
Scientists did a long-term study of the river to check if the water was getting cleaner.
3. A school project that takes many weeks or months to finish.
For our long-term study of plants, we measured the bean sprouts every week.
4. A plan to keep watching a problem for a long time before deciding what to do.
The city started a long-term study of traffic before building the new road.