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cross hair

or crosshair

noun, Usually, cross hairs
Also called cross wire. one of the fine wires or fibers, strands of spider web, or the like, crossing in a focal plane of an optical instrument to center a target or object or to define a line of sight.
one of the marks that aid in the positioning of overlaying images for correct registration in printing.
Compare register (def 11b). Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for cross hairs
Historical Examples
  • In the angle between the cross hairs, wasn't there a slight haze?

    Out Around Rigel Robert H. Wilson
  • Moving the lever, he caused the cross hairs to center on the warhead.

    Pushbutton War Joseph P. Martino
  • I brought the cross hairs to bear just back of his foreleg and pulled.

    Fox Trapping A. R. (Arthur Robert) Harding
  • As soon as the cross hairs touch the target, just grab the trigger as though it was a million sols getting away from you.

    Four-Day Planet Henry Beam Piper
  • The cross hairs or center-line indicators should be placed on the back of the camera, just in front of the plate.

  • To be used for surveying, a camera must be fitted with a spirit level and some arrangement for cross hairs.

  • He noted down the directions and set the cross hairs of his forward observer on Alpha Centauri.

    Giants on the Earth Sterner St. Paul Meek
  • Stern's head was centered in the scope and the cross hairs bobbed slowly about a spot just in front of the man's right ear.

    The Best Made Plans Everett B. Cole
  • Again, the cross hairs started to wander and he eased them back—back toward that little spot.

    The Best Made Plans Everett B. Cole
  • With the fine controls he centered the cross hairs of the eyepiece on the blazing object in the sky.

    The Year When Stardust Fell Raymond F. Jones
British Dictionary definitions for cross hairs

cross hairs

plural noun
two fine mutually perpendicular lines or wires that cross in the focal plane of a theodolite, gunsight, or other optical instrument and are used to define the line of sight Also called cross wires
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
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