Enter a clue or pattern or both:
The Clue
Concavo-convex lens (8 letter answer)
The Answer
MENISCUS
Tags
Notes
The answer MENISCUS is so rare that it appears less than once every 2500 puzzles.
Related Clues
Crescent
Crescent-shaped section of a lens
Lens with a crescent-shaped section
Definition
MENISCUS as a noun:
1. (meniscus, semilunar cartilage) = (anatomy) a disk of cartilage that serves as a cushion between the ends of bones that meet at a joint
2. (optics) a lens that is concave on one side and convex on the other
3. (physics) the curved upper surface of a nonturbulent liquid in a vertical tube