Pronunciation: (ub-zûr'vur), [key]
1. someone or something that observes.
2. a delegate to an assembly or gathering, who is sent to observe and report but not to take part officially in its activities.
3. U.S. Air Force.
a. a member of an aircrew, other than the pilot, holding an aeronautical rating.
b. a person who maintains observation in an aircraft during flight.
4. Also called air observer, aircraft observer. U.S. Army.a person who serves in an aircraft as a reconnoiterer and directs artillery fire.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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