reticle

ret·i·cle  (rt-kl)

n.

A grid or pattern placed in the eyepiece of an optical instrument, used to establish scale or position.

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[Latin rticulum, diminutive of rte, net.]

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A mark such as a cross or a system of lines lying in the image plane of a viewing apparatus. It may be used singly as a reference mark on certain types of monocular instruments or as one of a pair to form a floating mark as in certain types of stereoscopes. See also graticule.

Thesaurus

Noun

1.

reticle - a network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument graticule, reticule cross hair, cross wire - either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration; "he had the target in his cross hairs" eyepiece, ocular - combination of lenses at the viewing end of optical instruments network - a system of intersecting lines or channels; "a railroad network"; "a network of canals"