Definition of Extraordinary Expenses
This term in a constitutional provision that the state may incur indebtedness for extraordinary expenses, means other than ordinary expenses and such as are incurred by the state for the promotion of the general welfare, compelled by some unforeseen condition which is not regularly provided for by law, such as flood, famine, fire, earthquake, pestilence, war, or any other condition that will compel the state to put forward its highest endeavors to protect the people, their property, liberty, or lives.
That's the definition of Extraordinary Expenses in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.