Optics a network of very fine lines, wires, etc. in the focus of the eyepiece of an optical instrument
Origin of reticleClassical Latin reticulum: see reticule
A grid or pattern placed in the eyepiece of an optical instrument, used to establish scale or position. Also called graticule .
Origin of reticleLatin rēticulum diminutive of rēte net
Used in form “have somebody or something in one's reticle", meaning “to be targeting somebody or something".