reticle

[ ret-i-kuh l ]
/ ˈrɛt ɪ kəl /

noun Optics.

a network of fine lines, wires, or the like placed in the focus of the eyepiece of an optical instrument.
Also reticule.

Origin of reticle

1650–60; < Latin rēticulum little net, equivalent to rēt- (stem of rēte) net + -i- -i- + -culum -cle1
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British Dictionary definitions for reticle

reticle

less commonly reticule

/ (ˈrɛtɪkəl) /

noun

a network of fine lines, wires, etc, placed in the focal plane of an optical instrument to assist measurement of the size or position of objects under observationAlso called: graticule

Word Origin for reticle

C17: from Latin rēticulum a little net, from rēte net
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