observer

[ uh b-zur-ver ]
/ əbˈzɜr vər /

noun

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

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Origin of observer

First recorded in 1545–55; observe + -er1

OTHER WORDS FROM observer

ob·serv·er·ship, nounin·ter·ob·serv·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for observer

British Dictionary definitions for observer

observer
/ (əbˈzɜːvə) /

noun

a person or thing that observes
a person who attends a conference solely to note the proceedings
a person trained to identify aircraft, esp, formerly, a member of an aircrew
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012