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| the reciprocal of the bulk modulus, equal to the ratio of the fractional change in volume to the stress applied to a body |
| a device that produces a nearly parallel, monochromatic, coherent beam of light by exciting atoms to a higher energy level and causing them to radiate |
polarity po·lar·i·ty (pō-lār'ĭ-tē, pə-)
n.
The property of having two opposite poles, such as those possessed by a magnet, or of having opposite properties or characteristics.
The direction or orientation of positivity relative to negativity.
| polarity (pō-lār'ĭ-tē) Pronunciation Key
The condition of having poles or being aligned with or directed toward poles, especially magnetic or electric poles. |