1. Beyond or out of the common order or method; not in the usual, customary or regular course; not ordinary. Extraordinary evils require extraordinary remedies.
2. Exceeding the common degree or measure; hence, remarkable; uncommon; rare; wonderful; as the extraordinary talents of Shakespeare; the extraordinary powers of Newton; an edifice of extraordinary grandeur.
3. Special; particular; sent for a special purpose, or on a particular occasion; as an extraordinary courier or messenger; an embassador extraordinary; a gazette extraordinary.