1. a period of time devoted to a particular activity
2. a formal meeting of a court, legislature, or other official body
3. an academic term or period of instruction

Examples

• The therapy session lasted an hour.
• Congress will begin its new session next week.
• She enrolled for the summer session at the university.
• The band booked a recording session for their new album.
• We had a productive brainstorming session.
• The court session was postponed until Monday.
• The training session covered basic safety procedures.