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| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a gadget; dingus; thingumbob. |
| acidity (əˈsɪdɪtɪ) | |
| —n , pl -ties | |
| 1. | the quality or state of being acid |
| 2. | the amount of acid present in a solution, often expressed in terms of pH |
| 3. | another name for hyperacidity |
acidity a·cid·i·ty (ə-sĭd'ĭ-tē)
n.
The state, quality, or degree of being acid.