Matrimony (noun)

1. The state of being married.
2. The ceremony or institution of marriage.

Origin:

Middle english: from old french matrimoine, from latin matrimonium, from mater "mother".

Examples:

1. They entered into matrimony in a small ceremony with only close family present.
2. They had a happy matrimony and were married for over 50 years.
3. He was not ready for matrimony and decided to end the engagement.
4. The couple's matrimony was blessed with three children.
5. She was looking forward to a long and happy matrimony with her partner.