| 1. | a small group of students, as in a university, engaged in advanced study and original research under a member of the faculty and meeting regularly to exchange information and hold discussions. |
| 2. | the gathering place of such a group. |
| 3. | a meeting of such a group. |
| 4. | a course or subject of study for advanced graduate students. |
| 5. | any meeting for exchanging information and holding discussions. |