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| a scrap or morsel of food left at a meal. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| scratch test | |
| —n | |
| med a skin test to determine allergic sensitivity to various substances by placing the allergen to be tested over an area of lightly scratched skin. A positive reaction is typically indicated by the formation of a weal | |
scratch test (skrāch)
n.
A test for allergy performed by scratching the skin and applying an allergen to the wound.