English concavo-convex meaning in English  •  concavo-convex का अर्थ अंग्रेजी में

Adjective

• Concave on one side and convex on the other, as an eggshell or a crescent.
• Specifically, having such a combination of concave and convex sides as makes the focal axis the shortest line between them. See >Illust. > under Lens>.