retina
(noun) the innermost light-sensitive membrane covering the back wall of the eyeball; it is continuous with the optic nerve
Source: WordNet® 3.1
retina (plural retinas or retinae or retinæ)
(anatomy) The thin layer of cells at the back of the eyeball where light is converted into neural signals sent to the brain.
• atrine, ratinĂ©, retain, tanier, tearin', tin ear
Source: Wiktionary
Ret"i*na, n. Etym: [NL., from L. rete a net. Cf. Reticule.] (Anat.)
Definition: The delicate membrane by which the back part of the globe of the eye is lined, and in which the fibers of the optic nerve terminate. See Eye.
Note: The fibers of the optic nerve and the retinal blood vessels spread out upon the front surface of the retina, while the sensory layer (called Jacob's membrane), containing the rods and cones, is on the back side, next the choroid coat.
Source: Webster’s Unabridged Dictionary 1913 Edition
25 March 2025
(noun) fixation (as by a plaster cast) of a body part in order to promote proper healing; “immobilization of the injured knee was necessary”
Coffee dates back to the 9th century. Goat herders in Ethiopia noticed their goats seem to be “dancing” after eating berries from a particular shrub. They reported it to the local monastery, and a monk made a drink out of it. The monk found out he felt energized and kept him awake at night. That’s how the first coffee drink was born.
