ex·tra·or·di·nary /ek-'stȯr-də-ˌner-ē, ˌek-strə-'ȯr-/ adj
1 a: going beyond what is usual, regular, or customary; specif: of, relating to, or having the nature of a proceeding or action not normally required by law or not prescribed for the regular administration of law
an extraordinary session of the legislature
granted extraordinary relief compare ordinary
b: of or relating to a financial transaction that is not expected to be repeated
an extraordinary charge against earnings
an extraordinary gain
2: employed for or sent on a special function or service
an ambassador extraordinary
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.