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retinal

retinal

1 6.8
A red-yellow substance in the retina that helps the eye detect light
  • noun
  • /ˈrɛtɪnəl/
  • Specialized
: retinal
  • Seven weeks ago, Rock sent Amy their new retinal night serum capsules.

It has rose hip and bacuchial retinal, just a couple of drops of that.

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Examples

  • So prescription retinals, some tips with them.

  • It has rose hip and bacuchial retinal, just a couple of drops of that.

  • When light shines on them, the shape of the retinal changes.

  • I also use his frillic and retinal serum.

  • So Shormi Sohani says, I thought we should not use retinal and vitamin C together.

  • And this includes retinal esters, retinol, retinol and Trenton.

  • Three stages of visual functioning can be broadly defined: the optical, the retinal, and the neural—each of which has different properties and steps.

    Academic text (2009)
  • Pro retinol body butter, cool pro retinal beta retinoid, pink algae serum and then an eye cream.

  • Replacing retinal with 3-dehydroretinal will create a pigment that responds maximally to light at 615 nanometers (orange).

    Academic text (2009)
  • The retinal pigment is crucial for converting light into visual signals.

Synonyms

rhodopsin
vsretinal
  • Specialized
1 9.9

A red pigment in the eye's rod cells that starts the process of seeing in low light

is more general, a yellow to red vitamin A pigment essential for vision
retinene
vsretinal
  • Specialized
1 9.9

A yellow to red substance in the eye that helps turn light into nerve signals

is the original vitamin A pigment rather than its light-formed products
visual purple
vsretinal
  • Specialized
1 9.6

A reddish purple substance at the back of the eye that helps you see in dim light

is broader and not limited to low light function in rod cells
retinal purple
vsretinal
  • Specialized
9.1

A red substance in the eye that helps you see in dim light

is a broader yellow to red vitamin A pigment found throughout the retina

Compounds

retinal scanning
  • Specialized
6 5.7

A security check that uses a picture of the back of the eye to find who a person is

retinal detachment
  • Specialized
1 6.9

The retina pulls away from the back of the eye and causes sudden vision loss that needs urgent treatment

retinal rod
  • Specialized
1 7.4

A cell at the back of the eye that helps you see in very low light

retinal cone
  • Specialized
1 6.6

A cell in the eye that senses bright light and helps you see color

retinal purple
  • Specialized
9.1

A red substance in the eye that helps you see in dim light

Surface Forms

retinal singular
retinals plural

Morphology

retinal = retina (opaque) = retina + al

Although the form contains 'retina' + '-al', the noun names a specific vitamin A aldehyde, so the meaning is not predictable from the parts for most learners.

Etymology

Retinal (the pigment) is named after the retina because this yellow-red substance was first found in the back of the eye and comes from vitamin A, and when light hits retinal it changes shape and starts a signal that helps us see.