perborate (pəˈbɔːreɪt) ![]() | |
| —n | |
| See sodium perborate any of certain salts derived, or apparently derived, from perboric acid. Perborates are used as bleaches in washing powders | |
| 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. |