All definitions were taken from either The American Heritage Dictionary or Psychology (Third Edition) by Ludy T. Benjamin Jr., J. Roy Hopkins, and Jack R. Nation. Credit is given with each definition. To view the definition of a word, simply click on its link and a small window will appear with the meaning. For convenience, these definitions can also be accessed on nearly every other page in a similar manner.
  • accomodation
  • aerial perspective
  • bipolar cells
  • brightness
  • cerebral cortex
  • cones
  • cornea
  • epiglottis
  • epithelium
  • fovea
  • frequency
  • ganglion cells
  • hue
  • interposition
  • iris
  • larynx
  • lens
  • optic nerve
  • ossicles
  • papilla
  • pharynx
  • pupil
  • receptors
  • relative brightness
  • retina
  • rods
  • saturation
  • sclera
  • soft palate
  • taste buds
  • taste cells
  • texture gradient
  • trigeminal nerve
  • visible spectrum
  • visual acuity