pla·no-con·cave 
(plā′nō-kŏn-kāv, -kŏnkāv′)
(plā′nō-kŏn-kāv, -kŏnkāv′)adj.
Flat on one side and concave on the other: a plano-concave lens.
plano-concaveLight rays disperse through a plano-concave lens.
- classicalism
- classicality
- classically
- classicalness
- classical pathway
- classical swine fever
- classicism
- classicist
- classicize
- classifiable
- classification
- classificatorily
- classificatory
- classified
- classified advertisement
- classifier
- classify
- classiness
- classis
- classism
- classist
- classless
- classmate
- classroom
- classy