retinaculum tendinum retinaculum ten·di·num (těn’də-nəm)
The annular ligament of the ankle or wrist.
noun, plural retinas, retinae [ret-n-ee] /ˈrɛt nˌi/ (Show IPA). Anatomy. 1. 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. Trademark, Computers. […]
adjective 1. of or relating to the retina of the eye. noun, Biochemistry. 1. an orange pigment, C 2 0 H 2 8 O, that is the active component of rhodopsin and is liberated upon the absorption of light in the vision cycle; vitamin A aldehyde. retinal ret·i·nal (rět’n-āl’, -ôl’) n. See retinaldehyde.
- Retinal adaptation
retinal adaptation n. Adjustment of the eye to the degree of illumination.
- Retinal cone
retinal cone n. See cone cell.