Definition of reticle in English:


Syllabification: ret·i·cle
Pronunciation: /ˈretikəl


North American
  • A series of fine lines or fibers in the eyepiece of an optical device, such as a telescope or microscope, or on the screen of an oscilloscope, used as a measuring scale or an aid in locating objects.
    More example sentences
    • In fact, the extremely complex reticles that will be required to extend optical lithography below 100 nm will make the cost of ownership impractical for low-volume applications.
    • Even autocollimators with micrometer-driven reticles used with averaged multiple readings require a skilled operator to achieve accurate, repeatable results.
    • Several different reticles are available that are tailored to the type of long range shooting envisioned.


mid 18th century: from Latin reticulum 'net'.

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