reticle noun. ['rɛtɪk(ǝ)l] M17.
[Latin RETICULUM: cf. RETICULE.]
1. A little net, a casting-net. Also, a structure resembling a net. rare. M17-L18.

2. A grid of fine threads or lines set in the focal plane or eyepiece of an optical instrument to facilitate observation and measurement. Also called reticule. Cf. GRATICULE. M18.

3. A disc etc. with a pattern of opaque and transparent portions which can be rotated in the path of a beam of light or other radiation so as to interrupt it periodically. M20.

[TahlilGaran] English Dictionary ▲