What does STUDY mean?

noun

1. a detailed critical inspection
2. applying the mind to learning and understanding a subject (especially by reading)“mastering a second language requires a lot of work”
3. a written document describing the findings of some individual or group“this accords with the recent study by Hill and Dale”
4. a state of deep mental absorption“she is in a deep study”
5. a room used for reading and writing and studying“he knocked lightly on the closed door of the study”
6. a branch of knowledge“in what discipline is his doctorate?”
7. preliminary drawing for later elaboration“he made several studies before starting to paint”
8. attentive consideration and meditation“after much cogitation he rejected the offer”