lenticular
Concise Oxford English Dictionary © 2008 Oxford University Press:
lenticular /lɛnˈtɪkjʊlə/
▶adjective
- 1 shaped like a lentil; biconvex.
- 2 relating to the lens of the eye.
– origin ME: from L. lenticularis, from lenticula, dimin. of lens, lent- ‘lentil’.
'lenticular' also found in these Oxford entries:

