retina meaning

  • The retina (/ˈrɛtɪnə/ RET-i-nə, pl. retinae, /ˈrɛtiniː/; from Latin rēte, meaning "net") is the third and inner coat of the eye which is a light-sensitive layer of tissue.
  • In vertebrate embryonic development, the retina and the optic nerve originate as outgrowths of the developing brain, so the retina is considered part of the central nervous system (CNS) and is actually brain tissue.
  • The retina is a layered structure with several layers of neurons interconnected by synapses. The only neurons that are directly sensitive to light are the photoreceptor cells. These are mainly of two types: the rods and cones.

    Definition of retina in English Dictionary

  • NounPLretinasPLretinaePLretinæPREré-
    1. (anatomy) The thin layer of cells at the back of the eyeball where light is converted into neural signals sent to the brain.
    2. More Examples
      1. Used in the Middle of Sentence
        • In the RPE-choroid there was evidence of wound response in both macular and extramacular regions, whereas in the retina the region of response was limited to the macula, as is the primary visual loss.
        • The linear labeling continued intraretinally and was seen to be oriented parallel to the surface of the ILM, at variable depths in relation to the retina (Fig 3A).
    • Part-of-Speech Hierarchy
      1. Nouns
        • Nouns with irregular plurals
          • Countable nouns
        Related Links:
        1. en retinas
        2. en retinae
        3. en retinal
        4. en retinals
        5. en retinamide
        Source: Wiktionary

        Meaning of retina for the defined word.

        Grammatically, this word "retina" is a noun, more specifically, a nouns with irregular plural and a countable noun.
        Difficultness: Level 5
        Easy     ➨     Difficult
        Definiteness: Level 8
        Definite    ➨     Versatile