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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 chattering or flighty, light-headed person. |
| signal (sĭg'nəl) Pronunciation Key
A fluctuating quantity or impulse whose variations represent information. The amplitude or frequency of voltage, current, electric field strength, light, and sound can be varied as signals representing information. |