Sitting (noun)

1. The action of sitting down.
2. A period of time spent sitting down.
3. A session of a legislative or other assembly when it is in session.
4. An act of sitting for a portrait, photograph, or as a model.

Origin:

Old english sittende, present participle of sittan "to sit"; related to sit.

Examples:

1. She was tired after a long sitting.
2. The sitting was scheduled to last for two hours.
3. The sitting of the court was adjourned.
4. The artist did a sitting for the portrait.
5. The sitting President was re-elected.