Is “Retina” a Scrabble word?
Yes
RETINA
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Retina
/ˈɹɛt.ɨ.nə/
noun
1.The thin layer of cells at the back of the eyeball where light is converted into neural signals sent to the brain.