Definition of "retinal" []

  • Of or relating to the retina of the eye. (adjective)
  • See retinene. (noun)
  • The aldehyde form of the polyene retinol (vitamin A) that associates with the protein opsin to form the visual purple pigment rhodopsin (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. (c) HarperCollins Publishers Ltd 2016

Use "retinal" in a sentence
  • "For more spectacular photos, you can browse through this database in retinal ecstasy."
  • "Specific G proteins are found in retinal rods and cones"
  • "LLNL has assisted in the development of the first long-term retinal prosthesis - called an artificial retina - that can function for years inside the harsh biological environment of the eye."