| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
histochemistry his·to·chem·is·try (hĭs'tō-kěm'ĭ-strē)
n.
The branch of science that deals with the chemical composition of the cells and tissues of the body.