retinal scan definition
A technology for the identification of individuals that depends on the uniqueness of the pattern of blood vessels in the retinas of people’s eyes.
Note: Retinal scans are one means of identification that developed rapidly following the September 11 attacks (2001).
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. noun 1. the aldehyde form of the polyene retinol (vitamin A) that associates with the protein opsin to form the […]
retinene1 n. See retinaldehyde.
retinene2 n. See dehydroretinaldehyde.
noun, Mineralogy. 1. any of various fossil resins, especially one derived from brown coal. noun 1. any of various resins of fossil origin, esp one derived from lignite