the innermost coat of the posterior part of the eyeball that receives the image produced by the lens, is continuous with the optic nerve, and consists of several layers, one of which contains the rods and cones that are sensitive to light.
Retina, a brand name used by Apple, Inc., to describe display screens having a resolution so high that it is difficult to see individual pixels with the human eye: a Retina display; Retina technology; Retina quality.
Other definitions for Retin-A (2 of 2)
a brand of tretinoin, used especially to reduce wrinkles caused by overexposure to the sun.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use retina in a sentence
The lowest layer makes predictions about actual sensory input — say, the photons falling on the retina.Artificial Neural Nets Finally Yield Clues to How Brains Learn | Anil Ananthaswamy | February 18, 2021 | Quanta Magazine
Computer vision and bioengineered retinas tag-teamed to bolster artificial vision.Scientists Made a Biohybrid Nose Using Cells From Mosquitoes | Shelly Fan | January 26, 2021 | Singularity Hub
The best VR displays are somewhere between super-screen-door and retina resolution.New Display Packs 10,000 PPI and Could Paint Stunning VR Worlds | Jason Dorrier | November 1, 2020 | Singularity Hub
That means for VR to hit retina resolution, we’ll need displays with way more, way smaller pixels.New Display Packs 10,000 PPI and Could Paint Stunning VR Worlds | Jason Dorrier | November 1, 2020 | Singularity Hub
The retina also is home to another type of light-sensitive cell.
The updated iPad Mini, which will start at $399 ($599 for cell), gets a retina display as well as better performance.
The reality of the retina MacBook is a study in compromises.5 Reasons I Hate My New MacBook Pro: A Geek’s Critique | Jason Stewart | June 15, 2012 | THE DAILY BEAST
It is a building block of protein and found in large amounts in the brain, retina, heart, and blood platelets.
What is possibly lovable about the cornea—or the iris or the retina for that matter?
This apparition fixed itself upon her mental retina like a marvellous dream.Urania | Camille Flammarion
It is not the retina which is affected by a positive reality, it is the optic thalami of the brain which are excited.Urania | Camille Flammarion
A diminution or total loss of sight, arising from paralysis of the retina or optic nerve.
I suppose it to be a memory of looking at the sun—a quick glance at the sun leaves something such an impression on the retina.The Hills and the Vale | Richard Jefferies
We can, however, move the images on the retina by the aid of prisms without movement of the object.Schweigger on Squint | C. Schweigger
British Dictionary definitions for retina
the light-sensitive membrane forming the inner lining of the posterior wall of the eyeball, composed largely of a specialized terminal expansion of the optic nerve. Images focused here by the lens of the eye are transmitted to the brain as nerve impulses
- retinal, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for retina
The light-sensitive membrane that lines the inside of the back of the eyeball and connects to the brain by the optic nerve. The retina of vertebrate animals contains rods and cones, specialized cells that absorb light.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Cultural definitions for retina
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.