Remainder (noun)

1. Something that is left over after the greater part has been used, removed, or dealt with.
2. A quantity or amount that is left over after the main part has been taken or used.

Origin:

Late middle english: from old french remaindre, from latin remanere "remain", from re- "back" + manere "remain".

Examples:

1. She ate most of the pie, leaving a small remainder for tomorrow's breakfast.
2. The remainder of the budget was used to purchase office supplies.
3. The remainder of the building was sold to a private developer.
4. The remainder of the day was spent exploring the city.
5. The remainder of the money was donated to charity.