Definition of "sighting" [sight•ing]

• The act of catching sight of something, especially something unusual or searched for: a sighting of a whale in the harbor; a reported sighting of a UFO. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The _sighting notch_ in the slide with the rear sight leaf down, is the same height as is the sighting in the drift slide when the rear sight leaf is raised and set at 530 yards."
• "The short-sighting is only a step along the way to sighting it in at the desired "routine" distance (100 to 200 yards, depending on the gun)."
• "With the rollout of Jews and Baseball: An American Love Story, continuing through the end of November (click here for screening locator), a classical music sighting is made that the famous 18th century philosopher Moses Mendelssohn would have been proud of."