graticule

[ grat-i-kyool ]
/ ˈgræt ɪˌkyul /

noun

Navigation. a network of parallels and meridians on a map or chart.
Optics. a reticle.

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Origin of graticule

1885–90; <French <Latin crāticula, diminutive of crātis.See grate2, -cule1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for graticule

graticule
/ (ˈɡrætɪˌkjuːl) /

noun

the grid of intersecting lines, esp of latitude and longitude on which a map is drawn
another name for reticle
a transparent scale in front of a cathode-ray oscilloscope or other measuring instrument

Word Origin for graticule

C19: from French, from Latin crāticula, from crātis wickerwork
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