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Optic

/ˈäptik/ Adjective 1. Of, or relating to the eye or to vision. (wiktionary.org) 2. Of, or relating to optics or optical instruments. (wiktionary.org) Noun 1. (now humorous) An eye. (wiktionary.org) 2. A lens or other part of an optical instrument that interacts with light. (wiktionary.org) 3. A measuring device with a small window, attached to an upside-down bottle, used to dispense alcoholic drinks in a bar. (wiktionary.org) Word origin: From Middle French optique, obtique (c.1300) and directly from Medieval Latin opticus “of sight or seeing,” from Greek optikos “of or having to do with sight,” from optos “seen, visible,” from op-, root of opsesthai “be going to see,” related to ops...

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Optic

/ˈäptik/ Adjective 1. Of, or relating to the eye or to vision. (wiktionary.org) 2. Of, or relating to optics or optical instruments. (wiktionary.org) Noun 1. A lens or other optical component in an optical instrument. (Google Dictionary) 2. The eye. (Google Dictionary) Word origin: From Medieval Latin opticus “of sight or seeing,” from Greek optikos “of or having to do with sight,” from optos “seen, visible,” from op-, root of opsesthai “be going to see,” related to ops...

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Ora

Noun 1. Plural form of Latin os, the mouth or openings, especially of the cervix. (wiktionary.org) 2. An edge or margin. (biology-online.org)

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Ora serrata

Noun, pl. orae serratae 1. The serrated junction between the retina and the ciliary body. This junction marks the transition from the simple non-photosensitive area of the retina to the complex, multi-layered photosensitive region. In animals in which the region does not have a serrated appearance, it is called the ora ciliaris retinae. (wikipedia.org) 2. The serrated extremity of the optic part of the retina, located a little behind the ciliary body and marking the limits of the percipient portion of the membrane. (biology-online.org) 3. The dentate border of the retina. (merriam-webster.com) Word origin: From Latin words ora, “margin,” and serra,...

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