retina
ret.i.na \'ret-*n-*, 'ret-n*\ \-*n-.e-, -.i-\ \'ret-*n-*l, 'ret-n*l\ n or retinas or ret.i.nae [ME rethina, fr. ML retina, prob. fr. L rete net; akin to Gk] pl ere-mos lonely, solitary, Lith re.tis sieve : the sensory membrane of the eye that receives the image formed by the le ns, is the immediate instrument of vision, and is connected with the brain by the optic nerve - ret.i.nal aj