| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| crystallo- or (before a vowel) crystall- | |
| —combining form | |
| crystal: crystallography | |
| crystall- or (before a vowel) crystall- | |
| —combining form | |